Laden, Greg. "Eyes, Brains, and Latitude." Greg Ladens Blog. ScienceBlogs, 27 July 2011. Web. 24 Oct. 2016.
Heard-Booth, A. N., & Kirk, E. C. (2012). The Influence of Maximum Running Speed on Eye Size: A Test of Leuckart's Law in Mammals. The Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology, 295(6), 1053-1062. doi:10.1002/ar.22480
Howland, H. (2004, March 25). The allometry and scaling of the size of vertebrate eyes. Vision Research, 44(17), 2043-2065. doi:10.1016/s0042-6989(04)00164-6
Kirk, E. (2006, February 17). Effects of activity pattern on eye size and orbital aperture size in primates. Journal of Human Evolution, 51(2), 159-170. doi:10.1016/j.jhevol.2006.02.004
Liebenberg, L. (2006, December). Persistence Hunting by Modern Hunter‐Gatherers. Current Anthropology, 47(6), 1017-1026. doi:10.1086/508695
Melin, A. D., Fedigan, L. M., Hiramatsu, C., Sendall, C. L., & Kawamura, S. (2006, July 10). Effects of colour vision phenotype on insect capture by a free-ranging population of white-faced capuchins, Cebus capucinus. Animal Behaviour, 73(1), 205-214. doi:10.1016/j.anbehav.2006.07.003
Meyer, M. R., Lewis, J. E., Fong, M. R., Monge, J., & Holloway, R. L. (2014, January). Global Patterns of Human Orbit Size: Implications for Neandertals. ResearchGate. Retrieved October 25, 2016.
Pearce, E., & Dunbar, R. (2011, July 27). Latitudinal variation in light levels drives human visual system size. Biology Letters, 8(1), 90-93. doi:10.1098/rsbl.2011.0570
Radinsky, L. (1967). Relative Brain Size: A New Measure. Science,155(3764), 836-838. doi:10.1126/science.155.3764.836
Reimchen, T. E. (1987). Human color vision deficiencies and atmospheric twilight. Biodemography and Social Biology, 34(1-2), 1-11. doi:10.1080/19485565.1987.9988655
Short, A. (2016). The relationship between latitudinal light variation and orbit and cranial size in humans. Anthropological Review,79(2). doi:10.1515/anre-2016-0011
Tkačik, G., Garrigan, P., Ratliff, C., Milčinski, G., Klein, J. M., Seyfarth, L. H., . . . Balasubramanian, V. (2011). Natural Images from the Birthplace of the Human Eye. PLoS ONE, 6(6). doi:10.1371/journal.pone.0020409