A. E. Caswell.
Phys. Rev. 15, 1 (1920) - Published 1 January, 1920
Paul E. Klopsteg.
Phys. Rev. 15, 12 (1920) - Published 1 January, 1920
Satyendra Ray.
Phys. Rev. 15, 24 (1920) - Published 1 January, 1920
C. D. Child.
Phys. Rev. 15, 30 (1920) - Published 1 January, 1920
S. Nishikawa and G. Asahara
Phys. Rev. 15, 38 (1920) - Published 1 January, 1920
G. H. Henderson
Phys. Rev. 15, 46 (1920) - Published 1 January, 1920
G. H. Henderson
Phys. Rev. 15, 58 (1920) - Published 1 January, 1920
Fernando Sanford.
Phys. Rev. 15, 67 (1920) - Published 1 January, 1920
