1. Antonovics, J. 1968. Evolution in closely adjacent plant populations. VI. Manifold effects of gene flow. Heredity, 23, 507–524.
2. Burbidge, A H, and Whelan, R J. 1982. Seed dispersal in a cycad, Macrozamia riedlei. Aust J Ecol, 7, 63–67.
3. Ellstrand, N C, Ornduff, R, and Clegg, J M. 1990. Genetic structure of the Australian cycad Macrozamia communis (Zamiaceae). Am J Bot, 77, 677–681.
4. Hamrick, J L, and Godt, M J W. 1990. Allozyme diversity in plant species. In: Brown, A. H. D., Clegg, M. T., Kahler, A. L. and Weir, B. S. (eds), Plant Population Genetics, Breeding, and Genetic Resources, Sinnaur Associates Inc., Sunderland, MA, pp. 43–63.
5. James, S H, Wylie, A P, Johnson, M S, Carstairs, S A, and Simpson, G A. 1983. Complex hybridity in Isotoma petraea V. Allozyme variation and the pursuit of hybridity. Heredity, 51, 653–663.