Victor Mahillon
Phys. Rev. (Series I) 12, 193 (1901) - Published 1 April, 1901
E. H. Loomis
Phys. Rev. (Series I) 12, 220 (1901) - Published 1 April, 1901
William Francis Magie
Phys. Rev. (Series I) 12, 240 (1901) - Published 1 April, 1901
K. E. Guthe
Phys. Rev. (Series I) 12, 245 (1901) - Published 1 April, 1901
