Naugolnykh, S. V. (2020). Main biotic and climatic events in Early Permian of the Western Urals, Russia, as exemplified by the shallow-water biota of the early Kungurian lagoons. Palaeoworld. 29(2): 391-404.
Main biotic and climatic events in Early Permian of the Western Urals, Russia, as exemplified by the shallow-water biota of the early Kungurian lagoons