J. K.  Waage and Godfray, H. C. J., ?Reproductive strategies and population ecology of insect parasitoids?, in Behavioural Ecology, Ecological Consequences of Adaptive Behaviour, 25th Symposium of the British Ecological Society, R. M.  Sibly and Smith, R. H., Eds. Oxford: Blackwell, 1985, pp. 449-470.