Fedor Mouraviev, Vladimir V. Silantiev, Б. И. Гареев, G. А. Batalin. RHIZOID LIMESTONE FROM THE URZHUMIAN (MIDDLE PERMIAN) RED BEDS OF TETYUSHI VOLGA REGION, RUSSIA. SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 21st SGEM International Multidisciplinary Scientific GeoConference Proceedings 2021, Science and Technologies in Geology, Exploration And Mining, 2021, pp. 125-132. https://doi.org/10.5593/sgem2021/1.1/s01.016