Shirkov, B., O. Perestyuk, and A. Kushnir. “Geoelectric Studies of the Belgorod-Sumy Megablock of the Northern Slope of the Dnieper-Donets Trough”. Geofizicheskiy Zhurnal 37, no. 5 (October 1, 2015): 176–182. Accessed April 25, 2024. https://journals.uran.ua/geofizicheskiy/article/view/111163.