F. K. Richtmyer

Rev. Mod. Phys. 9, 391 (1937) - Published 1 October, 1937

E. W. Hewson

Rev. Mod. Phys. 9, 403 (1937) - Published 1 October, 1937

E. U. Condon

Rev. Mod. Phys. 9, 432 (1937) - Published 1 October, 1937