Zernov AE, Kuzina YV. Asymptotic Behavior of Solutions of the Cauchy Problem x′ = f(t, x, x′), x(0) = 0. Ukr. Mat. Zhurn. [Internet]. 2002 Dec. 25 [cited 2025 Dec. 6];54(12):1698-703. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/4209