NguyenManh Hung, and PhamTrieu Duong. “On the Smoothness of the Generalized Solution of a Parabolic System in Domains With Conic Points on the Boundary”. Ukrains’kyi Matematychnyi Zhurnal 56, no. 6 (June 25, 2004): 857–864. Accessed November 24, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/3804.