Manigda, O. V., A. V. Borysov, M. M. Belenko, and Ye. V. Pichkur. “BUSHEVE AND PISCHANA — HILL-FORTS OF POROSSYA DEFENSIVE LINE. TOPOGRAPHIC SURVEY AND STRATIGRAPHIC RESEARCHES”. Archaeology and Early History of Ukraine 38, no. 1(38) (June 1, 2021): 113–124. Accessed August 6, 2026. https://adiu.com.ua/index.php/journal/article/view/349.