KopachM.I., ObshtaA.F., and ShuvarB.A. “Differential Inequalities With One-Sided Lipshitz Property”. Carpathian Mathematical Publications 1, no. 1 (June 30, 2009): 59-64. Accessed February 27, 2024. https://journals.pnu.edu.ua/index.php/cmp/article/view/2567.