Sillero, N., Campos, J., Bonardi, A., Corti, C., Creemers, R., Crochet, P., Crnobrnja Isailović, J., Denoël, M., Ficetola, G. F., Gonçalves, J., Kuzmin, S., Lymberakis, P., de Pous, P., Rodríguez, A., Sindaco, R., Speybroeck, J., Toxopeus, B., Vieites, D. R., Vences, M. (2014) Updated distribution and biogeography of amphibians and reptiles of Europe. Amphibia – Reptilia, 35, 1-31.