Oscar H. Ibarra - Publications

Affiliations: 
Computer Science University of California, Santa Barbara, Santa Barbara, CA, United States 

139 high-probability publications. We are testing a new system for linking publications to authors. You can help! If you notice any inaccuracies, please sign in and mark papers as correct or incorrect matches. If you identify any major omissions or other inaccuracies in the publication list, please let us know.

Year Citation  Score
2019 Ibarra OH, McQuillan I. On families of full trios containing counter machine languages Theoretical Computer Science. 799: 71-93. DOI: 10.1016/J.Tcs.2019.09.045  0.332
2019 Ibarra OH, McQuillan I, Ravikumar B. On counting functions and slenderness of languages Theoretical Computer Science. 777: 356-378. DOI: 10.1016/J.Tcs.2018.11.021  0.339
2019 Ibarra OH, McQuillan I. On store languages and applications Information & Computation. 267: 28-48. DOI: 10.1016/J.Ic.2019.03.003  0.377
2018 Ibarra OH. Grammatical characterizations of NPDAs and VPDAs with counters Theoretical Computer Science. 746: 136-150. DOI: 10.1016/J.Tcs.2018.06.035  0.337
2018 Ibarra OH, McQuillan I. On store languages of language acceptors Theoretical Computer Science. 745: 114-132. DOI: 10.1016/J.Tcs.2018.05.036  0.331
2018 Ibarra OH, McQuillan I. Variations of checking stack automata: Obtaining unexpected decidability properties Theoretical Computer Science. 738: 1-12. DOI: 10.1016/J.Tcs.2018.04.024  0.32
2017 Cui C, Dang Z, Fischer TR, Ibarra OH. Information rate of some classes of non-regular languages: An automata-theoretic approach Information & Computation. 256: 45-61. DOI: 10.1016/J.Ic.2017.04.008  0.337
2017 Enaganti SK, Ibarra OH, Kari L, Kopecki S. Further remarks on DNA overlap assembly Information & Computation. 253: 143-154. DOI: 10.1016/J.Ic.2017.01.009  0.305
2016 Ibarra OH, McQuillan I. The effect of end-markers on counter machines and commutativity Theoretical Computer Science. 627: 71-81. DOI: 10.1016/J.Tcs.2016.02.034  0.36
2016 Enaganti SK, Ibarra OH, Kari L, Kopecki S. On the overlap assembly of strings and languages Natural Computing. 1-11. DOI: 10.1007/S11047-015-9538-X  0.315
2015 Ibarra OH, Seki S. Semilinear sets and counter machines: A brief survey Fundamenta Informaticae. 138: 61-76. DOI: 10.3233/Fi-2015-1198  0.345
2015 Eremondi J, Ibarra OH, McQuillan I. On the density of context-free and counter languages Lecture Notes in Computer Science (Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics). 9168: 228-239. DOI: 10.1142/S0129054118400051  0.303
2015 Eremondi J, Ibarra OH, McQuillan I. Insertion operations on deterministic reversal-bounded counter machines Lecture Notes in Computer Science (Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics). 8977: 200-211. DOI: 10.1016/J.Jcss.2018.02.003  0.359
2015 Eremondi J, Ibarra OH, McQuillan I. Deletion operations on deterministic families of automata Lecture Notes in Computer Science (Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics). 9076: 388-399. DOI: 10.1016/J.Ic.2017.07.009  0.333
2015 Ibarra OH. On decidability and closure properties of language classes with respect to bio-operations Natural Computing. DOI: 10.1007/S11047-015-9500-Y  0.33
2013 Ibarra OH, Tran NQ. How to synchronize the heads of a multitape automaton International Journal of Foundations of Computer Science. 24: 799-813. DOI: 10.1142/S0129054113400194  0.307
2013 Ibarra OH, Seki S. On the open problem of Ginsburg concerning semilinear sets and related problems Theoretical Computer Science. 501: 11-19. DOI: 10.1016/J.Tcs.2013.07.025  0.36
2013 Cui C, Dang Z, Fischer TR, Ibarra OH. Similarity in languages and programs Theoretical Computer Science. 498: 58-75. DOI: 10.1016/J.Tcs.2013.05.040  0.314
2013 Ibarra OH, Ravikumar B. On bounded languages and reversal-bounded automata Information and Computation. DOI: 10.1016/J.Ic.2015.11.007  0.33
2012 Ibarra OH, Eǧecioǧlu O. A survey of results on stateless multicounter automata Fundamenta Informaticae. 116: 129-140. DOI: 10.3233/Fi-2012-674  0.325
2012 Ibarra OH, Seki S. Characterizations of bounded semilinear languages by one-way and two-way deterministic machines International Journal of Foundations of Computer Science. 23: 1291-1305. DOI: 10.1142/S0129054112400539  0.329
2012 Ibarra OH, Tran NQ. On synchronized multi-tape and multi-head automata Theoretical Computer Science. 449: 74-84. DOI: 10.1016/J.Tcs.2012.04.006  0.328
2012 Chiniforooshan E, Daley M, Ibarra OH, Kari L, Seki S. One-reversal counter machines and multihead automata: Revisited Theoretical Computer Science. 454: 81-87. DOI: 10.1016/J.Tcs.2012.04.002  0.361
2011 Yu F, Bultan T, Ibarra OH. Relational string verification using multi-track automata International Journal of Foundations of Computer Science. 22: 1909-1924. DOI: 10.1142/S0129054111009112  0.318
2011 Ibarra OH. On strong reversibility in P systems and related problems International Journal of Foundations of Computer Science. 22: 7-14. DOI: 10.1142/S0129054111007782  0.372
2010 Frisco P, Ibarra OH. On sets of numbers accepted by P/T systems composed by join Theoretical Computer Science. 411: 3905-3916. DOI: 10.1016/J.Tcs.2010.07.016  0.358
2010 Ibarra OH, Potapov I, Yen HC. On decision problems for parameterized machines Theoretical Computer Science. 411: 1192-1201. DOI: 10.1016/J.Tcs.2009.12.013  0.337
2010 Ibarra OH. On the universe, disjointness, and containment problems for simple machines Information and Computation. 208: 1273-1282. DOI: 10.1016/J.Ic.2010.07.004  0.355
2010 Ibarra OH, Pérez-Jiménez MJ, Yokomori T. On spiking neural P systems Natural Computing. 9: 475-491. DOI: 10.1007/S11047-009-9159-3  0.397
2010 Yang L, Dang Z, Ibarra OH. Bond computing systems: A biologically inspired and high-level dynamics model for pervasive computing Natural Computing. 9: 347-364. DOI: 10.1007/S11047-009-9134-Z  0.33
2009 Ibarra OH, Pǎun A, Rodríguez-Patón A. Sequential SNP systems based on min/max spike number Theoretical Computer Science. 410: 2982-2991. DOI: 10.1016/J.Tcs.2009.03.004  0.354
2009 Cavaliere M, Ibarra OH, Pǎun G, Egecioglu O, Ionescu M, Woodworth S. Asynchronous spiking neural P systems Theoretical Computer Science. 410: 2352-2364. DOI: 10.1016/J.Tcs.2009.02.031  0.678
2008 Yang L, Dang Z, Ibarra OH. On stateless automata and P systems International Journal of Foundations of Computer Science. 19: 1259-1276. DOI: 10.1142/S0129054108006261  0.356
2008 Ibarra OH, Dang Z, Yang L. On counter machines, reachability problems, and Diophantine equations International Journal of Foundations of Computer Science. 19: 919-934. DOI: 10.1142/S0129054108006042  0.314
2008 Ibarra OH, P̌un A. Computing with cells: Membrane systems - Some complexity issues International Journal of Parallel, Emergent and Distributed Systems. 23: 347-365. DOI: 10.1080/17445760701640266  0.343
2008 Gerede CE, Ibarra OH, Ravikumar B, Su J. Minimum-cost delegation in service composition Theoretical Computer Science. 409: 417-431. DOI: 10.1016/J.Tcs.2008.08.040  0.739
2008 Ibarra OH, Woodworth S. Characterizations of some classes of spiking neural P systems Natural Computing. 7: 499-517. DOI: 10.1007/S11047-008-9084-X  0.684
2008 Ibarra OH, Woodworth S, Yu F, Pǎun A. On spiking neural P systems and partially blind counter machines Natural Computing. 7: 3-19. DOI: 10.1007/S11047-007-9043-Y  0.652
2008 Cavaliere M, Egecioglu O, Ibarra OH, Ionescu M, Pǎun G, Woodworth S. Asynchronous spiking neural P systems: Decidability and undecidability Lecture Notes in Computer Science (Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics). 4848: 246-255. DOI: 10.1007/978-3-540-77962-9_26  0.617
2007 Ibarra OH, Woodworth S. Characterizing regular languages by spiking neural P systems International Journal of Foundations of Computer Science. 18: 1247-1256. DOI: 10.1142/S0129054107005297  0.673
2007 Ibarra OH, Pǎun A, Pǎun G, Rodríguez-Patón A, Sosík P, Woodworth S. Normal forms for spiking neural P systems Theoretical Computer Science. 372: 196-217. DOI: 10.1016/J.Tcs.2006.11.025  0.667
2007 Ibarra OH, Woodworth S. Spiking neural P systems: Some characterizations Lecture Notes in Computer Science (Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics). 4639: 23-37.  0.659
2006 Cheruku S, Paun A, Romero-Campero FJ, Perez-Jimenez MJ, Ibarra OH. Simulating FAS-induced apoptosis by using P systems Pre-Proceedings of the International Conference On Bio-Inspired Computing - Theory and Applications: Membrane Computing Section, Bic-Ta 2006. 71-81. DOI: 10.1080/10020070708541019  0.327
2006 Ibarra OH, Woodworth S. On symport/antiport P systems with a small number of objects International Journal of Computer Mathematics. 83: 613-629. DOI: 10.1080/00207160601065439  0.642
2006 Ibarra OH, Yen HC. Deterministic catalytic systems are not universal Theoretical Computer Science. 363: 149-161. DOI: 10.1016/J.Tcs.2006.07.029  0.373
2006 Ibarra OH, Pǎun G. Characterizations of context-sensitive languages and other language classes in terms of symport/antiport P systems Theoretical Computer Science. 358: 88-103. DOI: 10.1016/J.Tcs.2006.03.003  0.395
2006 Ibarra OH, Dang Z. On the solvability of a class of diophantine equations and applications Theoretical Computer Science. 352: 342-346. DOI: 10.1016/J.Tcs.2005.12.001  0.332
2006 Csuhaj-Varjú E, Ibarra OH, Vaszil G. On the computational complexity of P automata Natural Computing. 5: 109-126. DOI: 10.1007/S11047-005-4461-1  0.404
2006 Ibarra OH, Woodworth S. Characterizations of some restricted spiking neural P systems Lecture Notes in Computer Science (Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics). 4361: 424-442. DOI: 10.1007/11963516_27  0.618
2006 Ibarra OH, Woodworth S. On bounded symport/antiport P systems Lecture Notes in Computer Science (Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics). 3892: 129-143. DOI: 10.1007/11753681_10  0.618
2006 Ibarra OH, Woodworth S, Yen HC, Dang Z. On symport/antiport P systems and semilinear sets Lecture Notes in Computer Science (Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics). 3850: 253-271. DOI: 10.1007/11603047_18  0.614
2006 Ibarra OH, Woodworth S, Yen HC, Dang Z. On the computational power of 1-deterministic and sequential P systems Fundamenta Informaticae. 73: 133-152.  0.645
2005 Dang Z, Ibarra OH. On one-membrane P systems operating in sequential mode International Journal of Foundations of Computer Science. 16: 867-881. DOI: 10.1142/S0129054105003340  0.38
2005 Ibarra OH, Yen HC, Dang Z. On various notions of parallelism in P systems International Journal of Foundations of Computer Science. 16: 683-705. DOI: 10.1142/S0129054105003236  0.389
2005 Ibarra OH, Woodworth S. On symport/antiport P systems with one or two symbols Proceedings - Seventh International Symposium On Symbolic and Numeric Algorithms For Scientific Computing, Synasc 2005. 2005: 431-439. DOI: 10.1109/SYNASC.2005.52  0.614
2005 Gerede CE, Ibarra OH, Ravikumar B, Su J. Online and minimum-cost ad hoc delegation in e-service composition Proceedings - 2005 Ieee International Conference Onservices Computing, Scc 2005. 103-110. DOI: 10.1109/SCC.2005.69  0.735
2005 Dang Z, Ibarra OH, Su J. On composition and lookahead delegation of e-services modeled by automata Theoretical Computer Science. 341: 344-363. DOI: 10.1016/J.Tcs.2005.06.009  0.346
2005 Ibarra OH. On determinism versus nondeterminism in P systems Theoretical Computer Science. 344: 120-133. DOI: 10.1016/J.Tcs.2005.03.052  0.404
2005 Dang Z, Ibarra OH, Sun ZW. On two-way nondeterministic finite automata with one reversal-bounded counter Theoretical Computer Science. 330: 59-79. DOI: 10.1016/J.Tcs.2004.09.010  0.373
2005 Ibarra OH. On membrane hierarchy in P systems Theoretical Computer Science. 334: 115-129. DOI: 10.1016/J.Tcs.2004.05.007  0.354
2005 Ibarra OH, Woodworth S, Yen HC, Dang Z. On sequential and 1-deterministic P systems Lecture Notes in Computer Science. 3595: 905-914.  0.646
2004 Ibarra OH. On the computational complexity of membrane systems Theoretical Computer Science. 320: 89-109. DOI: 10.1016/J.Tcs.2004.03.045  0.417
2004 Ibarra OH, Dang Z, Egecioglu O. Catalytic P systems, semilinear sets, and vector addition systems Theoretical Computer Science. 312: 379-399. DOI: 10.1016/J.Tcs.2003.10.028  0.366
2004 Ibarra OH, Dang Z. On two-way FA with monotonic counters and quadratic Diophantine equations Theoretical Computer Science. 312: 359-378. DOI: 10.1016/J.Tcs.2003.10.027  0.349
2004 Dang Z, Bultan T, Ibarra OH, Kemmerer RA. Past pushdown timed automata and safety verification Theoretical Computer Science. 313: 57-71. DOI: 10.1016/J.Tcs.2003.10.004  0.366
2004 Ibarra OH. The number of membranes matters Lecture Notes in Computer Science (Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics). 2933: 218-231. DOI: 10.1007/978-3-540-24619-0_16  0.357
2004 Gerede CE, Hull R, Ibarra OH, Su J. Automated composition of e-services: Lookaheads Icsoc '04: Proceedings of the Second International Conference On Service Oriented Computing. 252-262.  0.737
2003 Daley M, Ibarra OH, Kari L. Closure and decidability properties of some language classes with respect to ciliate bio-operations Theoretical Computer Science. 306: 19-38. DOI: 10.1016/S0304-3975(03)00139-7  0.303
2003 Ibarra OH, Dang Z. Eliminating the storage tape in reachability constructions Theoretical Computer Science. 299: 687-706. DOI: 10.1016/S0304-3975(02)00545-5  0.341
2003 Dang Z, Ibarra OH, Kemmerer RA. Generalized discrete timed automata: Decidable approximations for safety verification Theoretical Computer Science. 296: 59-74. DOI: 10.1016/S0304-3975(02)00432-2  0.325
2002 Dang Z, Ibarra OH. The existence of ω-chains for transitive mixed linear relations and its applications International Journal of Foundations of Computer Science. 13: 911-936. DOI: 10.1142/S0129054102001539  0.311
2002 Ibarra OH. Verification in queue-connected multicounter machines International Journal of Foundations of Computer Science. 13: 115-127. DOI: 10.1142/S0129054102000984  0.328
2002 Ibarra OH, Su J. Augmenting the discrete timed automaton with other data structures Theoretical Computer Science. 289: 191-204. DOI: 10.1016/S0304-3975(01)00269-9  0.344
2002 Ibarra OH, Su J, Dang Z, Bultan T, Kemmerer RA. Counter machines and verification problems Theoretical Computer Science. 289: 165-189. DOI: 10.1016/S0304-3975(01)00268-7  0.333
2002 Harju T, Ibarra OH, Karhumäki J, Salomaa A. Some Decision Problems Concerning Semilinearity and Commutation Journal of Computer and System Sciences. 65: 278-294. DOI: 10.1006/Jcss.2002.1836  0.353
2001 Ibarra OH, Bultan T, Su J. On reachability and safety in infinite-state systems International Journal of Foundations of Computer Science. 12: 821-836. DOI: 10.1142/S0129054101000898  0.361
2000 Zhu H, Yang T, Zheng Q, Watson D, Ibarra OH, Smith T. Adaptive load sharing for clustered digital library servers International Journal On Digital Libraries. 2: 225-235. DOI: 10.1007/Pl00021467  0.534
1999 Ibarra OH, Su J. Technique for proving decidability of containment and equivalence of linear constraint queries Journal of Computer and System Sciences. 59: 1-28. DOI: 10.1006/Jcss.1999.1624  0.357
1997 Ibarra OH, Diniz PC, Rinard MC. On the Complexity of Commutativity Analysis International Journal of Foundations of Computer Science. 8: 81-94. DOI: 10.1142/S0129054197000069  0.326
1995 Ibarra OH, Jiang T, Tran N, Wang H. New Decidability Results Concerning Two-Way Counter Machines Siam Journal On Computing. 24: 123-137. DOI: 10.1137/S0097539792240625  0.382
1995 Ibarra OH, Pong TC, Sohn SM. A note on parsing pattern languages Pattern Recognition Letters. 16: 179-182. DOI: 10.1016/0167-8655(94)00091-G  0.317
1994 Ibarra OH, Tran NQ. On communication-bounded synchronized alternating finite automata Acta Informatica. 31: 315-327. DOI: 10.1007/Bf01178509  0.327
1994 Ibarra OH, Kim MH. Fast Parallel Algorithms for Solving Triangular Systems of Linear Equations on the Hypercube Journal of Parallel and Distributed Computing. 20: 303-316. DOI: 10.1006/Jpdc.1994.1029  0.333
1994 Ibarra OH, Zheng Q. Some Efficient Algorithms for Permutation Graphs Journal of Algorithms. 16: 453-469. DOI: 10.1006/Jagm.1994.1021  0.305
1993 Ibarra OH, Jiang T, Tran N, Wang H. On The Equivalence Of Two-Way Pushdown Automata And Counter Machines Over Bounded Languages International Journal of Foundations of Computer Science. 4: 135-146. DOI: 10.1142/S0129054193000092  0.373
1993 Ibarra OH, Trân NQ. Synchronized finite automata and 2DFA reductions Theoretical Computer Science. 115: 261-275. DOI: 10.1016/0304-3975(93)90119-E  0.305
1992 Ibarra OH, Wang H, Jiang T. String Editing on a One-Way Linear Array of Finite-State Machines Ieee Transactions On Computers. 41: 112-118. DOI: 10.1109/12.123389  0.348
1992 Ibarra OH, Jiang T, Wang H. A characterization of exponential-time languages by alternating context-free grammars Theoretical Computer Science. 99: 301-313. DOI: 10.1016/0304-3975(92)90355-J  0.345
1991 Ibarra OH, Jiang T. The power of alternating one-reversal counters and stacks Siam Journal On Computing. 20: 278-290. DOI: 10.1137/0220018  0.343
1991 Ibarra OH, Pong TC, Sohn SM. Parallel Recognition and Parsing on the Hypercube Ieee Transactions On Computers. 40: 764-770. DOI: 10.1109/12.90253  0.35
1991 Ibarra OH, Jiang T, Chang JH, Ravikumar B. Some classes of languages in NC1 Information and Computation. 90: 86-106. DOI: 10.1016/0890-5401(91)90061-6  0.316
1991 Ibarra OH, Jiang T, Wang H. Parallel parsing on a one-way linear array of finite-state machines Theoretical Computer Science. 85: 53-74. DOI: 10.1016/0304-3975(91)90047-6  0.384
1990 Ibarra OH, Pong TC, Sohn SM. String Processing on the Hypercube Ieee Transactions On Acoustics, Speech, and Signal Processing. 38: 160-164. DOI: 10.1109/29.45630  0.31
1990 Ibarra OH, Palis MA. An efficient all-parses systolic algorithm for general context-free parsing International Journal of Parallel Programming. 19: 295-331. DOI: 10.1007/Bf01379361  0.31
1990 Ibarra OH, Jiang T, Chang JH, Palis MA. Systolic algorithms for some scheduling and graph problems Journal of Vlsi Signal Processing. 1: 307-320. DOI: 10.1007/Bf00929924  0.302
1989 Ravikumar B, Ibarra OH. Relating the type of ambiguity of finite automata to the succinctness of their representation Siam Journal On Computing. 18: 1263-1282. DOI: 10.1137/0218083  0.366
1989 Ibarra OH, Jiang T, Chang JH. On iterative and cellular tree arrays Journal of Computer and System Sciences. 38: 452-473. DOI: 10.1016/0022-0000(89)90011-1  0.377
1988 Chang JH, Ibarra OH, Pong TC, Sohn SM. Two-Dimensional Convolution on a Pyramid Computer Ieee Transactions On Pattern Analysis and Machine Intelligence. 10: 590-593. DOI: 10.1109/34.3920  0.3
1988 Chan T, Ibarra OH. On the finite-valuedness problem for sequential machines Theoretical Computer Science. 23: 95-101. DOI: 10.1016/0304-3975(88)90012-6  0.339
1987 Ibarra OH, Jiang T. On one-way cellular arrays Siam Journal On Computing. 16: 1135-1154. DOI: 10.1137/0216072  0.325
1987 Chang JH, Ibarra OH, Palis MA. Parallel Parsing on a One-Way Array of Finite-State Machines Ieee Transactions On Computers. 36: 64-75. DOI: 10.1109/Tc.1987.5009449  0.354
1987 Ibarra O, Palis M. VLSI algorithms for solving recurrence equations and applications Ieee Transactions On Acoustics, Speech, and Signal Processing. 35: 1046-1064. DOI: 10.1109/Tassp.1987.1165233  0.316
1987 Chang JH, Ibarra OH, Ravikumar B, Berman L. Some observations concerning alternating Turing machines using small space Information Processing Letters. 25: 1-9. DOI: 10.1016/0020-0190(87)90085-8  0.312
1986 Ibarra OH, Kim SM, Palis MA. Designing Systolic Algorithms Using Sequential Machines Ieee Transactions On Computers. 35: 531-542. DOI: 10.1109/Tc.1986.5009430  0.33
1986 Culik K, Yu S, Ibarra OH. Iterative tree arrays with logarithmic depth International Journal of Computer Mathematics. 20: 187-204. DOI: 10.1080/00207168608803543  0.306
1986 Ibarra OH, Kim SM, Rosier LE. Characterizations of multihead finite automata Information & Computation. 67: 114-125. DOI: 10.1016/S0019-9958(85)80029-2  0.325
1985 Ibarra OH, Kim SM, Moran S. Sequential Machine Characterizations of Trellis and Cellular Automata and Applications Siam Journal On Computing. 14: 426-447. DOI: 10.1137/0214033  0.353
1985 Ibarra OH, Moran S. Some independence results in complexity theory International Journal of Computer Mathematics. 17: 113-122. DOI: 10.1080/00207168508803454  0.301
1985 Ibarra OH, Rosier LE. The equivalence problem and correctness formulas for a simple class of programs Information & Computation. 65: 18-41. DOI: 10.1016/S0019-9958(85)80018-8  0.33
1985 Ibarra OH, Palis MA, Chang JH. On efficient recognition of transductions and relations Theoretical Computer Science. 39: 89-106. DOI: 10.1016/0304-3975(85)90132-X  0.345
1984 Ibarra OH, Kim SM. Characterizations and computational complexity of systolic trellis automata Theoretical Computer Science. 29: 123-153. DOI: 10.1016/0304-3975(84)90015-X  0.318
1984 Ibarra OH, Kim SM. A characterization of systolic binary tree automata and applications Acta Informatica. 21: 193-207. DOI: 10.1007/Bf00289240  0.335
1983 Ibarra OH, Moran S. Probabilistic Algorithms for Deciding Equivalence of Straight-Line Programs Journal of the Acm. 30: 217-228. DOI: 10.1145/322358.322373  0.314
1983 Chan T, Ibarra OH. On the Space and Time Complexity of Functions Computable by Simple Programs Siam Journal On Computing. 12: 708-716. DOI: 10.1137/0212048  0.316
1983 Ibarra OH, Rosier LE. Simple programming languages and restricted classes of turing machines Theoretical Computer Science. 26: 197-220. DOI: 10.1016/0304-3975(83)90085-3  0.336
1983 Ibarra OH. On some decision questions concerning pushdown machines Theoretical Computer Science. 24: 313-322. DOI: 10.1016/0304-3975(83)90006-3  0.347
1982 Ibarra OH. 2DST mappings on languages and related problems Theoretical Computer Science. 19: 219-227. DOI: 10.1016/0304-3975(82)90061-5  0.307
1982 Ibarra OH, Leininger BS, Moran S. On the complexity of simple arithmetic expressions Theoretical Computer Science. 19: 17-28. DOI: 10.1016/0304-3975(82)90012-3  0.321
1982 Ibarra OH, Moran S, Hui R. A generalization of the fast LUP matrix decomposition algorithm and applications Journal of Algorithms. 3: 45-56. DOI: 10.1016/0196-6774(82)90007-4  0.302
1981 Gurari EM, Ibarra OH. The complexity of the equivalence problem for two characterizations of presburger sets Theoretical Computer Science. 13: 295-314. DOI: 10.1016/S0304-3975(81)80003-5  0.372
1981 Gurari EM, Ibarra OH. The complexity of decision problems for finite-turn multicounter machines Journal of Computer and System Sciences. 22: 220-229. DOI: 10.1016/0022-0000(81)90028-3  0.349
1981 Gurari EM, Ibarra OH. Semi)alternating stack automata Theory of Computing Systems \/ Mathematical Systems Theory. 15: 211-224. DOI: 10.1007/Bf01786980  0.318
1981 Ibarra OH, Rosier LE. On restricted one-counter machines Theory of Computing Systems \/ Mathematical Systems Theory. 14: 241-245. DOI: 10.1007/Bf01752400  0.35
1980 Gurari EM, Ibarra OH. Path Systems: Constructions, Solutions and Applications Siam Journal On Computing. 9: 348-374. DOI: 10.1137/0209029  0.365
1979 Gurari EM, Ibarra OH. Some decision problems concerning sequential transducers and checking automata Journal of Computer and System Sciences. 18: 18-34. DOI: 10.1016/0022-0000(79)90049-7  0.313
1979 Gurari EM, Ibarra OH. Simple counter machines and number-theoretic problems Journal of Computer and System Sciences. 19: 145-162. DOI: 10.1016/0022-0000(79)90025-4  0.359
1979 Ibarra OH. Restricted One-Counter Machines with Undecidable Universe Problems* Theory of Computing Systems \/ Mathematical Systems Theory. 13: 181-186. DOI: 10.1007/Bf01744294  0.322
1978 Ibarra OH. The Unsolvability of the Equivalence Problem for $\varepsilon $-Free NGSM’s with Unary Input (Output) Alphabet and Applications Siam Journal On Computing. 7: 524-532. DOI: 10.1137/0207042  0.336
1978 Ibarra OH. On two-way sequential transductions of full semi-AFL's☆ Theoretical Computer Science. 7: 287-309. DOI: 10.1016/0304-3975(78)90019-1  0.362
1977 Ibarra OH, Kim CE. Heuristic Algorithms for Scheduling Independent Tasks on Nonidentical Processors Journal of the Acm. 24: 280-289. DOI: 10.1145/322003.322011  0.312
1976 Ibarra OH, Kim CE. A useful device for showing the solvability of some decision problems Journal of Computer and System Sciences. 13: 153-160. DOI: 10.1016/S0022-0000(76)80026-8  0.31
1976 Ibarra OH, Sahni SK, Kim CE. Finite automata with multiplication Theoretical Computer Science. 2: 271-294. DOI: 10.1016/0304-3975(76)90081-5  0.367
1975 Ibarra OH, Sahni SK. Hierarchies of turing machines with restricted tape alphabet size Journal of Computer and System Sciences. 11: 56-67. DOI: 10.1016/S0022-0000(75)80049-3  0.308
1974 Ibarra OH. A Hierarchy Theorem for Polynomial-Space Recognition Siam Journal On Computing. 3: 184-187. DOI: 10.1137/0203014  0.312
1973 Ibarra OH. Controlled pushdown automata Information Sciences. 6: 327-342. DOI: 10.1016/0020-0255(73)90047-9  0.312
1971 Ibarra OH. Characterizations of some tape and time complexity classes of turing machines in terms of multihead and auxiliary stack automata Journal of Computer and System Sciences. 5: 88-117. DOI: 10.1016/S0022-0000(71)80029-6  0.315
1970 Book RV, Greibach SA, Ibarra OH, Wegbreit B. Tape-bounded turing acceptors and principal AFLs Journal of Computer and System Sciences. 4: 622-625. DOI: 10.1016/S0022-0000(70)80032-0  0.329
1970 Ibarra OH. Simple matrix languages Information & Computation. 17: 359-394. DOI: 10.1016/S0019-9958(70)80034-1  0.317
1968 Harrison MA, Ibarra OH. Multi-tape and multi-head pushdown automata Information & Computation. 13: 433-470. DOI: 10.1016/S0019-9958(68)90901-7  0.31
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