J.  Certeaud, ?New aspects in electron microscopy by scanning in dermatology. Cutaneous parasitology: Pediculus humanus capitis and Pthirus ingiunalis?, Bulletin de la Societe Francaise de Dermatologie et de Syphiligraphie, vol. 76, no. 6, pp. 768 - 771, 1969.

B.  Duncan, ?Pediculosis?, in Infections in children, R. J.  Wedgwood, Ed. Philadelphia.: Harper and Row., 1982, pp. 1566 - 1569.

, ?Typhus fevers.?, in Infections in children, R. J.  Wedgwood, Ed. Philadelphia: Row and Harper, 1982, pp. 1032 - 1044.

M.  Osujih, ?Population screening for headlice: An epidemiological study among school pupils in Nigeria?, Health Hyg., vol. 8, no. 2, pp. 56 - 59, 1987.