Julian Blanchard.

Phys. Rev. 11, 81 (1918) - Published 1 February, 1918

John Q. Stewart.

Phys. Rev. 11, 100 (1918) - Published 1 February, 1918

Frances G. Wick

Phys. Rev. 11, 121 (1918) - Published 1 February, 1918

Phys. Rev. 11, 130 (1918) - Published 1 February, 1918

Phys. Rev. 11, 159 (1918) - Published 1 February, 1918