1.
Zernov AE, Chaichuk OR. Qualitative investigation of a singular Cauchy problem for a functional differential equation. Ukr. Mat. Zhurn. [Internet]. 2005Oct.25 [cited 2024Nov.22];57(10):1344–1358. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/3690