Krippner, Stanley and Daniel Rubin, editors,
The Kirlian Aura,
Anchor Books, New York, 1974.
Kruithof, A. A., “Tubular Luminescence Lamp,”
March 1941.
Laszlo, Josef, “Observations on Two New Artificial Lights for Reptile Displays,”
International Zoo Yearbook,
9: 12-13, 1969.
Leadbeater, C. W.,
Man Visible and Invisible,
Неизвестная страница