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Hugo
Gyldén
Stockholms observatorium (Astronomy Tree)

Karl
Weierstrass
Universität Berlin


Anders Severin
Donner
Stockholms observatorium


Anders Severin
Donner
Stockholms observatorium

Oskar
Backlund
Pulkovo Observatory (Astronomy Tree)

Henri
Poincaré
University of Paris


Karl Frithiof
Sundman
Univ. Helsinki


Yrjö
Väisälä
University of Turku


Nils
Duner
University of Uppsala (Astronomy Tree)


Östen
Bergstrand
University of Uppsala (Astronomy Tree)


Knut
Lundmark
University of Lund (Astronomy Tree)


Leo
Königsberger
Universität Heidelberg (MathTree)


Max
Wolf
Universität Heidelberg


Heinrich
Vogt
University of Jena


Carl Anton
Bjerknes
University of Oslo, Norway (Meteorology Tree)

Henri
Poincaré
University of Paris



Vilhelm Friman Koren
Bjerknes
University of Oslo, Norway (Meteorology Tree)


Christian
Christiansen
Copenhagen University





Niels
Bohr
Copenhagen University


Svein
Rosseland
University of Oslo, Norway



Osmi
Vilhu
Univ. Helsinki
(Options)

Juri
Poutanen
University of Turku

Osmi VilhuX