PopovG. Ya. “On Some Integral Transformations and Their Application to the Solution of Boundary-Value Problems in Mathematical Physics”. Ukrains’kyi Matematychnyi Zhurnal 53, no. 6 (June 25, 2001): 810-819. Accessed November 22, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/4301.