Reference

Enrico Lunghi, Gentile Francesco Ficetola, Benedetta Barzaghi, Chiara Vitillo, Manuela Mulargia, Raoul Manenti (2017): Melanism in European plethodontid salamanders (Amphibia, Plethodontidae, Hydromantes) – Spixiana, Zeitschrift für Zoologie – 040: 157 - 160.