Bukanay N, Mirzakulova A, Assanova A. Asymptotic estimates of the solution for a singularly perturbed Cauchy problem. M [Internet]. 2025 Jun. 30 [cited 2025 Jul. 9];118(2):44-51. Available from: http://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/876