Шульга, С. Н., О. В. Багацкая, and А. В. Стрижаченко. “The 2D Scattering Problem Solution on a Body in Homogeneous Medium via the Method of Nonlocal Boundary Condition”. Visnyk of V.N. Karazin Kharkiv National University, Series “Radio Physics and Electronics”, no. 24, 1, pp. 9-13, https://periodicals.karazin.ua/radiophysics/article/view/6378.