(ru) Novikov A.V., Early Triassic amphibians of Eastern Europe: evolution of dominant groups and peculiarities of changing communities, Moscow: RAS, (ISBN978-5-906906-71-7, lire en ligne), p. 138« Archive copy »,
(ru) Novikov A.V., Early Triassic amphibians of Eastern Europe: evolution of dominant groups and peculiarities of changing communities, Moscow: RAS, (ISBN978-5-906906-71-7, lire en ligne), p. 138« Archive copy »,