Prota G, Hu DN, Vincensi MR, McCormick SA, Napolitano A (1998). «Characterization of melanins in human irides and cultured uveal melanocytes from eyes of different colors». Exp. Eye Res.67 (3): 293–9. PMID9778410. doi:10.1006/exer.1998.0518. CS1 maint: Multiple names: authors list (link)
Prota G, Hu DN, Vincensi MR, McCormick SA, Napolitano A (1998). «Characterization of melanins in human irides and cultured uveal melanocytes from eyes of different colors». Exp. Eye Res.67 (3): 293–9. PMID9778410. doi:10.1006/exer.1998.0518. CS1 maint: Multiple names: authors list (link)