Thornton C. Fry
Phys. Rev. 17, 441 (1921) - Published 1 April, 1921
E. L. Nichols and D. T. Wilber
Phys. Rev. 17, 453 (1921) - Published 1 April, 1921
Horace L. Howes
Phys. Rev. 17, 469 (1921) - Published 1 April, 1921
J. Valasek
Phys. Rev. 17, 475 (1921) - Published 1 April, 1921
L. R. Ingersoll
Phys. Rev. 17, 493 (1921) - Published 1 April, 1921
J. E. Shrader
Phys. Rev. 17, 502 (1921) - Published 1 April, 1921
Phys. Rev. 17, 508 (1921) - Published 1 April, 1921
