Schäfer, B.T. & Malavasi, C.E. & Favaron, P.O. & Ambrósio, C.E. & Miglino, M.A. & de Amorim, A.F. & Rici, R.E.G. (2012)
Morphological observations of ampullae of lorenzini in Squatina guggenheim and S. occulta (Chondrichthyes, Elasmobranchii, Squatinidae) Microscopy Research and Technique, 75(9), 1213–1217
DOI: 10.1002/jemt.22051
Jones, C.J.P. & Walker, T.I. & Bell, J.D. & Reardon, M.B. & Ambrosio, C.E. & Almeida, A. & Hamlett, W.C. (2005)
Male Genital Ducts and Copulatory Appendages in Chondrichthyans. In W.C. Hamlett (Ed.), Reproductive biology and phylogeny of chondrichthyes: sharks, rays and chimaeras, Vol. 3 (pp. 361–393). Science Publishers, Endfield, USA