1. Observationes D. Anthonii Lewenhoeck, de natis'e semine genitali animalculis
2. Greep R. O. and Koblinsky M. A. Frontiers in Reproduction and Fertility Control. MIT Press Cambridge MA 1977.
3. Reproductive Function and Semen. Springer-Verlag;Mann T.;Heidelberg,1981
4. Leitritz E. and Lewis R. C. Trout and Salmon Culture. Agricultural Sciences Pub. Berkeley CA 1980 pp. 1-146.
5. Sperm structure in relation to phylogeny in lower metazoa. In: The Spermatozoan (D. W. Fawcett and J. M. Bedford, Eds.), Urban & Schwarzenberg;Afzelius B. A;Baltimore,1979