Modified Krasovskii’s Method for Constructing Liapunov Function. Al-Nahrain Journal of Science, [S. l.], v. 14, n. 4, p. 177–180, 2011. Disponível em: https://mail.anjs.edu.iq/index.php/anjs/article/view/784. Acesso em: 3 apr. 2025.