“Subsurface Object Recognition in a Soil Using UWB Irradiation by Bow-Tie Antenna and Artificial Neural Network”. Visnyk of V.N. Karazin Kharkiv National University, Series “Radio Physics and Electronics”, no. 29, Dec. 2018, pp. 27-34, https://doi.org/10.26565/2311-0872-2018-29-04.