1. Askew, R.R.: Parasitic insects. New York: American-Elsevier 1971
2. Baker, E.W., Wharton, G.W.: An introduction to acarology. New York: Macmillan Co. 1952
3. Balazs, E.A., Jeanloz, R.W. (Eds.): The amino sugars, IIB. Metabolism and interactions. New York: Academic Press 1969
4. Bland, K.P., Miller, G.J.: The function of the salivary gland of the cockroachN. cinerea. J. Insect Physiol.17, 2069?2083 (1971)
5. Camin, J.H.: Observations on the life history of the snake mite,Ophionyssus natricus. Chicago Acad. Sci. Spec. Publ.10, 1?75 (1953)