and Williams-Dean, G., ?The coprolites of man?, Scientific American, vol. 232, pp. 100 - 109, 1975.

M. J.  Facheux, ?Les poux de l´homme: 1. Contribution a l´etude de la locomotion et de la respiration chez Pediculus humanus capitis de Greer, et Pthirus pubis L?, ll. Soc. Sci. Nat. Ouest Fr., vol. 73, no. 2-3, pp. 69 - 76, 1975.

J.  Lang, ?Transmission of head lice by insects?, Entomologist's Monthly Magazine, vol. 111, no. 1337-1339, pp. 231 - 232, 1975.