George Walter Stewart
Phys. Rev. (Series I) 13, 257 (1901) - Published 1 November, 1901
Carl Barus
Phys. Rev. (Series I) 13, 283 (1901) - Published 1 November, 1901
E. F. Nichols and G. F. Hull
Phys. Rev. (Series I) 13, 307 (1901) - Published 1 November, 1901