Griebel, Ulrike & Schmid, Axel. (2002). Spectral sensitivity and Color Vision in the Bottlenose Dolphin (Tursiops Truncatus). Marine and Freshwater Behaviour and Physiology - MAR FRESHW BEHAV PHYSIOL. 35. 129-137. 10.1080/1023624021000014716.
Ross L. Pepper, James V. Simmons, In-air visual acuity of the bottlenose dolphin, In Experimental Neurology, Volume 41, Issue 2, 1973, Pages 271-276, ISSN:0014-4886 doi:10.1016/0014-4886(73)90268-9
Kirk, E. C., & Kay, R. F. (2004).
The evolution of high visual acuity in the Anthropoidea.
In Anthropoid Origins (pp. 539-602). Springer US.
Warrant E.J., Nilsson D.-E. (1998) Absorption of White Light in Photoreceptors. Vision Res., Vol. 38, No. 2, pp. 195-207. PII: S0042-6989(97)00151-X
Stavenga D., Smits R.P., Hoenders B.J. (1993) Simple Exponential Functions Describing the Absorbance Bands of Visual Pigment Spectra. Vision Res. 33(8) pp. 1011-1017. doi:10.1016/0042-6989(93)90237-Q