Hladka O. М. “Mathematical Modeling of Nonlinear Displacement Processes in Oil LEF-Layer by Methods of Complex Analysis and Summary Representations”. Geofizicheskiy Zhurnal, vol. 41, no. 2, Apr. 2019, pp. 156-70, doi:10.24028/gzh.0203-3100.v41i2.2019.164465.