1. HAIRSTON, N.G., SMITH, F.E., SLOBODKIN, L.B. 1960. Community structure, population control, and competition. Am. Nat. 94: 421–425.
2. EMDEN, H.F. VAN (ed.). 1973. Insect/Plant Relationships. Symposia of the Royal Entomological Society of London: No. 6. John Wiley & Sons, New York, p. 215.
3. EHRLICH, P.T., RAVEN, P.H. 1964. Butterflies and plants: A study in coevolution. Evolution 18:586–608.
4. RAFFA, K.F. 1995. Differential responses among natural enemies and prey to bark beetle pheromones: Implications of chemical, temporal, and spatial disparities to evolutionary theory and pest management. In: Behavior, Population Dynamics and Control of Forest Insects. (F.P. Hain, S.M. Salom, W.F. Ravlin, T.L. Payne, K.F. Raffa, eds.), Ohio State Univ., Wooster, Ohio, pp. 208–225.
5. WHITHAM, T.G. 1983. Host manipulation of parasites: Within-plant variation as a defense against rapidly evolving pests. In: Variable Plants and Herbivores in Natural and Managed Systems. (R.F. Denno, M.S. McClure, eds.), Academic Press, New York, pp. 15–41.