Frederick M. Pedersen
Phys. Rev. (Series I) 25, 225 (1907) - Published 1 October, 1907
C. R. Fountain and F. C. Blake
Phys. Rev. (Series I) 25, 255 (1907) - Published 1 October, 1907
John C. Shedd and James A. Birchby
Phys. Rev. (Series I) 25, 274 (1907) - Published 1 October, 1907
W. S. Franklin and L. A. Freudenberger
Phys. Rev. (Series I) 25, 294 (1907) - Published 1 October, 1907
