Ergashev, Tuhtasin, и Akmaljon Okboev. 2026. «Boundary Value Problems With Mixed Dirichlet and Neumann Conditions for Three-Dimensional Degenerate Elliptic Equation». Journal of Osh State University. Differential Equations, вып. 1 (февраль):93-. https://journal.oshsu.kg/index.php/diffeq/article/view/3945.