Fedor Mouraviev, T.V. Kropotova, Б. И. Гареев, Georgi Batalin Alexander, А.О. Гордеев. "LOESS-LIKE SILTSTONES FROM THE URZHUMIAN (MIDDLE PERMIAN) RED BEDS OF KAZAN VOLGA REGION, RUSSIA." SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 20th SGEM International Multidisciplinary Scientific GeoConference Proceedings 2020, Science and Technologies in Geology, Exploration And Mining (2020): 155-162. https://doi.org/10.5593/sgem2020/1.1/s01.020