Harold W. Webb and L. E. Woodman

Phys. Rev. (Series I) 29, 89 (1909) - Published 1 August, 1909

Martin E. Rice and Burton McCollum

Phys. Rev. (Series I) 29, 132 (1909) - Published 1 August, 1909

Willard J. Fisher

Phys. Rev. (Series I) 29, 147 (1909) - Published 1 August, 1909

Orin Tugman

Phys. Rev. (Series I) 29, 154 (1909) - Published 1 August, 1909

W. W. Strong

Phys. Rev. (Series I) 29, 170 (1909) - Published 1 August, 1909

Jakob Kunz

Phys. Rev. (Series I) 29, 174 (1909) - Published 1 August, 1909