Grebenyukov VI, Shulyak TI. On the Legality of Using the Concept "Early Middle Ages" in Relation to the Archaeological Complexes of Western Siberia . АЕС [Internet]. 2023 Nov. 3 [cited 2024 Jul. 3];(5):283-92. Available from: https://evrazstep.ru/index.php/aes/article/view/1118