Kopach, M., Obshta, A. and Shuvar, B. (2010) “An application of analogues of two-sided Kurpel’s methods to ordinary differential equations”, *Carpathian Mathematical Publications*, 2(2), pp. 48–54. Available at: https://journals.pnu.edu.ua/index.php/cmp/article/view/3966 (Accessed: 6 August 2024).