Violetta, G. (2004)
Chapter 20: Physical Examination 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. 271–280). Special Publication of the Ohio Biological Survey