Fernández A, Silió L, Rodríguez C, Ovilo C. Characterization of OCA2 cDNA in different porcine breeds and analysis of its potential effect on skin pigmentation in a red Iberian strain. Anim Genet. 2006 Apr;37(2):166–70. doi: 10.1111/j.1365-2052.2005.01393.x. PMID: 16573532.