William Francis Gray
Swann

National Bureau of Standards
































J MW
Milatz

Utrecht


Marcel
Dehalu

Université de Liège


Louis
de Broglie

Universite de Paris


Paul
Langevin

College de France




Théophile
De Donder

Free University of Brussels


Max
Born

Edinburgh




Léon
Rosenfeld

Nordic Institute for Theoretical Atomic Physics















Thomas J.
Greytak

MIT
(Options)

Thomas GreytakX