W. W. Coblentz

Phys. Rev. (Series I) 20, 337 (1905) - Published 1 June, 1905

C. D. Child

Phys. Rev. (Series I) 20, 364 (1905) - Published 1 June, 1905

Phys. Rev. (Series I) 20, 379 (1905) - Published 1 June, 1905