J. G. MacGregor
Phys. Rev. (Series I) 8, 129 (1899) - Published 1 March, 1899
Joseph O. Thompson
Phys. Rev. (Series I) 8, 141 (1899) - Published 1 March, 1899
H. J. Hotchkiss
Phys. Rev. (Series I) 8, 152 (1899) - Published 1 March, 1899
John Zeleny
Phys. Rev. (Series I) 8, 161 (1899) - Published 1 March, 1899
John C. Shedd
Phys. Rev. (Series I) 8, 174 (1899) - Published 1 March, 1899
Frank G. Baum
Phys. Rev. (Series I) 8, 181 (1899) - Published 1 March, 1899
Edward L. Nichols
Phys. Rev. (Series I) 8, 184 (1899) - Published 1 March, 1899