Investigation of the properties of the optimal set of practical semistability of solutions to systems of ordinary differential equations. Neliniini Kolyvannya, [S. l.], v. 28, n. 4, 2025. DOI: 10.3842/nosc.v28i4.1535. Disponível em: https://nosc.imath.kiev.ua/index.php/nosc/article/view/1204. Acesso em: 25 may. 2026.