1. Austin, C. R.: Fertilization. In: Reproduction in mammals. I. Germ cells and fertilization, pp 103–133. Ed. by C. R. Austin and R. V. Short. London: Cambridge Press 1972.
2. Brown, G. C.: Gamete surface components. In: Fertilization, Ed. by C. B. Metz and A. Monroy. New York: Academic Press 1967.
3. Clark, W. H. Jr., R. L. Moretti and W. W. Thomson: Histochemical and ultracytochemical studies of the spermatids and sperm of Ascaris lumbricoides var. suum. Biol. Reprod. 7, 145–159 (1972).
4. Costello, D. P., M. E. Davidson, A. Eggers, M. H. Fox and C. Henley: Methods for obtaining and handling marine eggs and embryos, 247 pp. United States: Lancaster Press 1957.
5. Hudinaga, N.: Reproduction, development and rearing of Penaeus japonicus Bate. Jap. J. Zool. 10, 305–393 (1942).