Muratbekov M, Muratbekov M. Smoothness and approximative properties of solutions of the singular nonlinear Sturm-Liouville equation. M [Internet]. 2020 Dec. 30 [cited 2025 Sep. 4];100(4):113-24. Available from: http://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/391