Korepanov, V. E., and F. L. Dudkin. “A New Approach to Earthquake Precursors Distinction”. Geofizicheskiy Zhurnal 34, no. 4 (August 1, 2012): 150–156. Accessed April 20, 2024. https://journals.uran.ua/geofizicheskiy/article/view/116763.