1. Levinson, H.Z., Levinson, A.R., in: Proc. 4th Insect/Host Plant Symp., p. 505 (eds. R.F. Chapman, E.A. Bernays). Amsterdam: Ned. Entom. Ver. 1978
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3. Levinson, H.Z., Levinson, A.R.: Mitt, dtsch. Ges. allg. angew. Ent.2, 228 (1981)
4. Ryan, M.F., O'Ceallachain, D.P.: J. Insect Physiol.22, 1501 (1976)
5. O'Ceallachain, D.P., Ryan, M.F.: ibid.J. Insect Physiol.23, 1303 (1977)