1. Caswell, H., 1989. Matrix population models. Sinauer Associates, Inc., Sunderland, 328 pp.
2. Fadlallah, Y. H., R. H. Karlson & K. P. Sebens, 1984. A comparative study of sexual reproduction in three species of Panamanian zoanthids (Coelenterata: Anthozoa). Bull. mar. Sci. 35: 80?89.
3. Harper, J. L., 1981. The concept of the modular organism. In R. M. May (ed.), Theoretical ecology: Principles and applications, 2nd edn. Sinauer, Sunderland: 53?77.
4. Harrison, P. L., R. C. Babcock, G. D. Bull, J. K. Oliver, C. C. Wallace & B. L. Willis, 1984. Mass spawning in tropical reef corals. Science, N.Y. 223: 1186?1189.
5. Hoffmann, R. J., 1986. Variation in contributions of asexual reproduction to the genetic structure of populations of the sea anemone Metridium senile. Evolution 40: 357?365.