Shuman, V.N. “Electrodynamics and the Response of the Geomedium to the Effect of External Electromagnetic Fields”. Geofizicheskiy Zhurnal 35, no. 5 (October 1, 2013): 129–149. Accessed March 2, 2024. https://journals.uran.ua/geofizicheskiy/article/view/116443.