Orlyuk, M.I., T.P. Sumaruk, Yu. P. Sumaruk, and A. A. Romenets. “Valuation of Induction Current Contribution to the Secular Variation of Geomagnetic Field (according to the Data of Ukrainian Geomagnetic Observatories)”. Geofizicheskiy Zhurnal 36, no. 2 (April 1, 2014): 111–119. Accessed April 27, 2024. https://journals.uran.ua/geofizicheskiy/article/view/116124.