Lychagina, E. ., & Mitroshin, E. . (2017). PRELIMINARY RESULTS OF THE STUDY OF THE MESILITHIC SITES LOCATED ON THE EASTERN SHORE OF LAKE CHASHKINSKOE. Perm Federal Research Centre Journal, 3, 92-99. https://journal.permsc.ru/index.php/pscj/article/view/PSCJ2016n3p12