[1]
E. V. Voskresenskii, “On the upper bound of uniformly bounded solutions”, Ukr. Mat. Zhurn., vol. 46, no. 5, pp. 501–505, May 1994, Accessed: Apr. 13, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/5713