KIM NGAN, Dinh. ULTIMATE BOUNDS OF RAPIDLY TIME-VARYING SYSTEMS: AN AVERAGING APPROACH. Journal of Science Natural Science, [S. l.], v. 3, n. 70, p. 3–12, 2025. DOI: 10.18173/2354-1059.2025-0032. Disponível em: https://hnuejs.edu.vn/ns/article/view/1092. Acesso em: 5 dec. 2025.