Poliachenko, I.B. “Middle-Paleozoic Fragment of the Appear Polar Wander Path Trajectory for the East European Platform”. Reports of the National Academy of Sciences of Ukraine, no. 10 (October 28, 2014): 106–110. Accessed July 11, 2026. https://nasu-periodicals.org.ua/index.php/dp/article/view/16788.