Bazalii, B. V. and Degtyarev, S. P. (2007) “On one boundary-value problem for a strongly degenerate second-order elliptic equation in an angular domain”, Ukrains’kyi Matematychnyi Zhurnal, 59(7), pp. 867–883. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/3352 (Accessed: 3May2024).