BICH, Nguyen Dang; THONG, Nguyen Vo. Methods for stability and instability of the solution of one non-linear differential equation. <b>Vietnam Journal of Mechanics</b>, Hanoi, Vietnam, v. 18, n. 3, p. 1–7, 1996. DOI: 10.15625/0866-7136/10099. Disponível em: https://vjmech.vast.vn/vjmech/article/view/10099. Acesso em: 8 nov. 2025.