P. . Pavlov, “THE ANCIENT PAST OF THE PERM KRAI: THE PALAEOLITHIC AGE”, ВПФИЦ, no. 4, pp. 22–32, Apr. 2014, Accessed: Jun. 10, 2026. [Online]. Available: https://journal.permsc.ru/index.php/pscj/article/view/PSCJ2013n4p2