Dzhumabaev DS, Uteshova RE. Weighted limit solution of a nonlinear differential equation at a singular point and its property. Ukr. Mat. Zhurn. [Internet]. 2017Dec.25 [cited 2024Apr.25];69(12):1717-22. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/1815