?


N. N.
Kolchigin

Kharkiv National University


Leopold B.
Felsen

Polytechnic Institute of New York


Ehud
Heyman

Tel Aviv University


Ben Zion
Steinberg

Tel Aviv University


Nathan
Marcuvitz

Polytechnic Institute of Brooklyn


Leopold B.
Felsen

Polytechnic Institute of New York


Ehud
Heyman

Tel Aviv University
?


P. J.
Luypaert

KU Leuven (MathTree)


George
Sinclair

University of Toronto (E-Tree)


Raj
Mittra

University of Central Florida (E-Tree)


Eric
Michielssen

University of Michigan (MathTree)



Shaojing
Li

UCSD
(Options)

Shaojing LiX