Shoimkulov Бойтура Махмудбекович. 2021. “Of One over Determined System Differential Equation at Private Derivative Second Order With One Singular Point and One Singular Line: Differential Equations”. BULLETIN OF PERM UNIVERSITY. MATHEMATICS. MECHANICS. COMPUTER SCIENCE, no. 4 (55) (December):14-18. https://doi.org/10.17072/1993-0550-2021-4-14-18.