BorsukM. V., and PleshaM. I. “Estimates of Generalized Solutions of the Dirichlet Problem for Quasilinear Elliptic Equations of the Second Order in a Domain With Conical Boundary Point”. Ukrains’kyi Matematychnyi Zhurnal 50, no. 10 (October 25, 1998): 1299–1309. Accessed July 27, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/4816.