1. Prota, G.Melanins and Melanogenesis; Academic Press: San Diego, CA, 1992.
2. Prota, G.; d'Ischia, M.; Napolitano, A. InThe Pigmentary System:ItsPhysiology and Pathophysiology; Nordlund, J. J., Boissy, R. E., Hearing, V. J., King, R. A., Ortonne, J. P., Eds.; Oxford University Press: New York, 1998; Chapter 24, pp 307−332.
3. The physical and chemical properties of eumelanin