AldashevS. A., and KitaibekovE. T. “Well-Posedness of the Dirichlet Problem in a Cylindrical Domain for Three-Dimensional Elliptic Equations With Degeneration of Type and Order”. Ukrains’kyi Matematychnyi Zhurnal 69, no. 9 (September 25, 2017): 1270-1274. Accessed December 4, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/1778.