Graeber, R.C. (1978)
Behavioral studies correlated with central nervous system integration of vision in sharks. In E.S. Hodgson & Mathewson, R.F. (Eds.), Sensory biology of sharks, skates and rays. (pp. 195–226). Office of Naval Research, Washington, D.C.

Graeber, R.C. & Schroeder, D.M. & Jane, J.A. & Ebbesson, S.O. (1978)
Visual discrimination following partial telencephalic ablations in nurse sharks (Ginglymostoma cirratum). Journal of Comparative Neurology, 180(2), 325–344
DOI: 10.1002/cne.901800209

Graeber, R.C. (1974)
Food intake patterns in captive juvenile lemon sharks, Negaprion brevirostris. Copeia, 1974(2), 554–556

Graeber, R.C. & Ebbesson, S.O.E. (1972)
Retinal projections in the lemon shark (Negaprion brevirostris). Brain, Behavior and Evolution, 5(6), 461–477
DOI: 10.1159/000123762

Graeber, R.C. & Ebbesson, S.O. (1972)
Visual discrimination learning in normal and tectal-ablated nurse sharks (Ginglymostoma cirratum). Comparative Biochemistry and Physiology – Part A, Physiology, 42(1), 131–139
DOI: 10.1016/0300-9629(72)90373-8