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Makoto Goda; Ryozo Fujii (). „The Blue Coloration of the Common Surgeonfish, Paracanthurus hepatus—II. Color Revelation and Color Changes”. Zoological Science. 15 (3): 323–333. doi:10.2108/zsj.15.323. PMID18465994.
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Prota G, Hu DN, Vincensi MR, McCormick SA, Napolitano A (). „Characterization of melanins in human irides and cultured uveal melanocytes from eyes of different colors”. Exp. Eye Res. 67 (3): 293–99. doi:10.1006/exer.1998.0518. PMID9778410.
Makoto Goda; Ryozo Fujii (). „The Blue Coloration of the Common Surgeonfish, Paracanthurus hepatus—II. Color Revelation and Color Changes”. Zoological Science. 15 (3): 323–333. doi:10.2108/zsj.15.323. PMID18465994.