Crochet, Dubois, Ohler & Tunner, 1995 : Rana (Pelophylax) ridibunda Pallas, 1771, Rana (Pelophylax) perezi Seoane, 1885, and their associated klepton (Amphibia: Anura): morphological diagnosis and description of a new taxon. Bulletin du Muséum National d'Histoire Naturelle, Paris, Section A, Zoologie, Biologie et Écologie Animales, vol. 17, p. 11-30.