REVA, M., and T. RUDENKO. “THE INTEGRAL CHARACTERISTICS OF AN INDUCTION LOOP PLACED ABOVE MULTI-LAYERED CONDUCTIVE SEMISPACE”. Visnyk of Taras Shevchenko National University of Kyiv. Geology, no. 38-39, July 2006, pp. 32-34, https://geology.bulletin.knu.ua/article/view/3288.