Don’t it make your brown eyes blue? A comparison of iris colour across latitude in Australian twins.

Sanfilippo, P. G., C. H. Wilkinson, J. B. Ruddle, G. Zhu, N. G. Martin, A. W. Hewitt and D. A. Mackey (2015).”Don’t it make your brown eyes blue? A comparison of iris colour across latitude in Australian twins.” Clin Exp Optom 98(2): 172-176. IF = 2.3