Tursunov Dilmurat A., Erkebaev Ulukbek ZairbekoVich «Asymptotic expansion of the solution of a perturbed elliptic equation when the limit equation has singular points» // Tomsk State University Journal of Mathematics and Mechanics 2015. №3(35) C.26-34
Tursunov Dilmurat Abdilllajanovich «Asymptotic expansion of the solution of the bisingularly perturbed elliptic equation» // Tomsk State University Journal of Mathematics and Mechanics 2013. №6(26) C.37-44
Erkebaev Ulukbek Z., Tursunov Dilmumt A. «Asymptotic expansion of the solution of the Dirichlet problem for a ring with a singularity on the boundary» // Tomsk State University Journal of Mathematics and Mechanics 2016. №1(39) C.42-52