H. H. Goldsmith, H. W. Ibser, and B. T. Feld

Rev. Mod. Phys. 19, 259 (1947) - Published 1 October, 1947

Raymond T. Birge and J. W. Weinberg

Rev. Mod. Phys. 19, 298 (1947) - Published 1 October, 1947

G. M. Clemence

Rev. Mod. Phys. 19, 361 (1947) - Published 1 October, 1947