Edward L. Nichols
Phys. Rev. (Series I) 13, 129 (1901) - Published 1 September, 1901
Mary I. Northway and A. Stanley Mackenzie
Phys. Rev. (Series I) 13, 145 (1901) - Published 1 September, 1901
William S. Franklin
Phys. Rev. (Series I) 13, 165 (1901) - Published 1 September, 1901
Martin D. Atkins
Phys. Rev. (Series I) 13, 182 (1901) - Published 1 September, 1901