Pyatakov, Yu. V., and V.I. Isaev. 2013. “Using the Methods of Potential Theory for Solving Direct Geophysical Problems for Three-Dimensional Complex Condition”. Geofizicheskiy Zhurnal 35 (2):78-97. https://doi.org/10.24028/gzh.0203-3100.v35i2.2013.111343.