Wurtman, Richard J., “The Effects of Light on the Human Body,”

Scientific American,

July 1975.

Zamkova, M. A. and E. I. Krivitskaya, “Effect of Irradiation by Ultraviolet Erythrine Lamps on the Working Ability of School Children,” Pedagogical Institute, Leningrad, 1966.

نامعلوم صفحہ