Burakhovich, T. K., and V. P. Kobolev. “Actual Problems of Geo-Environment and Sounding Systems”. Geofizicheskiy Zhurnal 39, no. 6 (November 30, 2017): 139–143. Accessed April 25, 2024. https://journals.uran.ua/geofizicheskiy/article/view/116946.