Gadjiev, Tahir, and M.N. Kerimova. “The Solutions Degenerate Elliptic-Parabolic Equations”. JOURNAL OF ADVANCES IN MATHEMATICS 3, no. 3 (October 28, 2013): 218–235. Accessed November 23, 2024. https://rajpub.com/index.php/jam/article/view/2458.