1. Pringle, J. W. S. in The Physiology of Insecta 2nd edn, 3 B (ed. Rockstein, M.) 433–476 (Academic, New York, 1974).
2. Camhi, J. M. & Hinkle, M. J. exp. Biol. 60, 477–492 (1974).
3. Burrows, M. in Perspectives in Experimental Biology 1, (ed. Spencer-Davies, P.) 399–409 (Pergamon, Oxford, 1976).
4. Guthrie, D. M. in The Biology of the Cockroach (ed. Guthrie, D.M. & Tindall, A.R.) 136–139 (Arnold, London, 1968).
5. Harris, C. L. Comp. Biochem. Physiol. 56 A, 333–335 (1977).