Jones, R.C. & Jones, N. & Djakiew, D. (1984)
Luminal Composition and Maturation of Spermatozoa in the Male Genital Ducts of the Port Jackson Shark, Heterodontus portusjacksoni.
Journal of Experimental Zoology, 230, 417–426 DOI: 10.1002/jez.1402300311