1. Cain, M. L. (1985), Random search by herbivorous insects: a simulation model. Ecology, 66(3), 876–888.
2. Caughley, G., Lawton, J. H. (1981) Plant herbivore systems. In: Theoretical Ecology. May, R. M. (ed.) 2nd edn. Sinauer Associates, Sunderland, pp. 132–166
3. Crawley, M. J. (1983) Herbivory: the dynamics of animal-plant interactions. Studies in Ecology 10. University of California Press, Berkeley
4. Denno, R. F., McLure, M. S. (eds.) (1983) Variable plants and herbivores in natural and managed systems. Academic Press, NewYork
5. Dyer, M. I. (1975) The effects of red-winged blackbirds (Agelaius phoeniceus, L) on biomass production of corn grain (Zea Mays, L). J. Appl. Ecol. 12, 719–726