Orlyuk, M.I., A. V. Marchenko, and Romenets А. A. “Spatial-Temporeral Changes in the Geomagnetic Field and Seismisity”. Geofizicheskiy Zhurnal 39, no. 6 (November 30, 2017): 84–105. Accessed May 22, 2022. http://journals.uran.ua/geofizicheskiy/article/view/116371.