Bedore, C.N. & Loew, E.R. & Frank, T.M. & Hueter, R.E. & McComb, D.M. & Kajiura, S.M. (2013)
A physiological analysis of color vision in batoid elasmobranchs. Journal of Comparative Physiology A: Neuroethology, Sensory, Neural, and Behavioral Physiology, 199(12), 1129–1141
DOI: 10.1007/s00359-013-0855-1

McComb, D.M. & Frank, T.M. & Hueter, R.E. & Kajiura, S.M. (2010)
Temporal Resolution and Spectral Sensitivity of the Visual System of Three Coastal Shark Species from Different Light Environments. Physiological and Biochemical Zoology, 83(2), 299–307
DOI: 10.1086/648394