A. P. Wills

Phys. Rev. (Series I) 9, 193 (1899) - Published 1 October, 1899

W. O. Atwater and E. B. Rosa

Phys. Rev. (Series I) 9, 214 (1899) - Published 1 October, 1899

Phys. Rev. (Series I) 9, 252 (1899) - Published 1 October, 1899

Phys. Rev. (Series I) 9, 254 (1899) - Published 1 October, 1899