Tulakova Z. Boundary value problems of dirichlet-neumann type for the three-dimensional elliptic equation with two singular coefficients.: Boundary value problems of dirichlet-neumann type for the three-dimensional elliptic equation with two singular coefficients. mp [Internet]. 2024 Jun. 6 [cited 2025 Sep. 1];1(01). Available from: https://ojs.qarshidu.uz/index.php/mp/article/view/620