• Antonovics, J. & Ellstrand, N. C. (1984). Experimental studies of the evolutionary significance of sexual reproduction. I. A test of the frequency-dependent selection hypothesis. Evolution, 38, 103112.
  • Ayala, F. J. (1968). Genotype, environment and population numbers. Science, 162, 14531459.
  • Birch, L. C. (1953). Experimental background to the study of the distribution and abundance of insects. I. The influence of temperature, moisture and food on the innate capacity for increase of three grain beetles. Ecology, 34, 698711.
  • Frank, P. W. (1960). Prediction of population growth form in Daphnia pulex cultures. American Naturalist, 94, 357372.
  • Gause, G. F. (1934). The Struggle for Existence. Hafner, New York .
  • Gleason, H. A. & Cronquist, A. (1963). Manual of Vascular Plants of Northeastern United States and Adjacent Canada. D. Van Nostrand Co., New York .
  • Greig-Smith, P. (1964). Quantitative Plant Ecology. Butterworth & Co., London .
  • Harper, J. L. (1977). Population Biology of Plants. Academic Press, London .
  • Leslie, P. H. & Park, T. (1949). The intrinsic rate of natural increase of Tribolium castaneum Herbst. Ecology, 30, 469477.
  • Nicholson, A. J. (1954). The balance of animal populations. Journal of Animal Ecology, 2, 132178.
  • Shaw, R. G. (1983). Density-dependence in Salvia lyrata L. Ph.D. dissertation, Duke University, Durham , North Carolina .
  • Shaw, R. G. & Antonovics, J. (1986). Density-dependence in Salvia lyrata, an herbaceous perennial: the effects of experimental alteration of seed densities. Journal of Ecology, 74, 797813.
  • Strecker, R. L. & Emlen, Jr, J. T. (1953). Regulatory mechanisms in house mouse population: the effect of limited food supply on a confined population. Ecology, 34, 375385.