R.  Xu, Noldus, L. P. J. J., and van Lenteren, J. C., ?The parasite-host relationship between Encarsia formosa Gahan (Hymenoptera, Aphelinidae) and Trialeurodes vaporariorum Westwood (Homoptera Aleyrodidae). XXII. Simulation models for the?, Journal of Applied Entomology, vol. 108, pp. 234-244, 1989.