Kuchnow, K.P. & Gilbert, P. (1967)
Preliminary in vivo studies on pupillary and tapetal pigment responses in the lemon shark, Negaprion brevirostris. In P.W. Gilbert, R.F. Mathewson, & D.P. Rall, (Eds.), Sharks, skates and rays. (pp. 465–477). John Hopkins Press, Baltimore