Henningsen, A.D. & Smale, M.J. & Garner, R. & Kinnunen, N. (2004)
Chapter 16: Reproduction, Embryonic Development, and Reproductive Physiology of Elasmobranchs. In M. Smith, D. Warmolts, D. Thoney, & R. Hueter (Eds.), The Elasmobranch Husbandry Manual: Captive Care of Sharks, Rays and their Relatives (pp. 227–236). Special Publication of the Ohio Biological Survey

Henningsen, A.D. & Smale, M.J. & Gordon, I. & Garner, R. & Marin-Osorno, R. & Kinnunen, N. (2004)
Chapter 17: Captive Breeding and Sexual Conflict in Elasmobranchs. In M. Smith, D. Warmolts, D. Thoney, & R. Hueter (Eds.), The Elasmobranch Husbandry Manual: Captive Care of Sharks, Rays and their Relatives (pp. 237–248). Special Publication of the Ohio Biological Survey