J. M. H.  Hopper, ?An epidemic of nits?, Canadian Journal of Public Health, vol. 62, no. 2, pp. 154 - 160, 1971.

A. M.  Shalaby, ?Susceptibility of Pediculus humanus capitis and Pediculus humanus corporis to chlorinated hydrocarbon insecticides in Lybia?, Zeitschrift für Angewandte Entomologie, vol. 69, no. 3, pp. 227 - 233, 1971.

B.  Keh and Poorbaugh, J. H., ?Understanding and treating infestations of lice on humans?, California Vector News, vol. 18, no. 5, pp. 23 - 31, 1971.