Investigation of properties of the optimal set of practical semistability of solutions of systems of ordinary differential equations. Neliniini Kolyvannya, [S. l.], v. 28, n. 4, p. 518–527, 2025. DOI: 10.3842/nosc.v28i4.1535. Disponível em: https://nosc.imath.kiev.ua/index.php/nosc/article/view/1204. Acesso em: 10 jul. 2026.