1.McCulloch K, Yuan F, Zhen Y, Aardema M, Smith G, Llorente-Bousquets J, Andolfatto P, Briscoe A. Sexual Dimorphism and Retinal Mosaic Diversification following the Evolution of a Violet Receptor in Butterflies. Mol Biol Evol. 2017;34(9):2271–2284. PMID: 28505307 Reference Link