Zernov AE, Kuzina YV. Asymptotic Behavior of Solutions of the Cauchy Problem <em class="a-plus-plus">x</em>′ = <em class="a-plus-plus">f</em>(<em class="a-plus-plus">t</em>, <em class="a-plus-plus">x</em>, <em class="a-plus-plus">x</em>′), <em class="a-plus-plus">x</em&gt;(0) = 0. Ukr. Mat. Zhurn. [Internet]. 2002Dec.25 [cited 2024Nov.22];54(12):1698-703. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/4209