THU HA, Nguyen. DYNAMIC EQUATIONS WITH TIME-VARYING DELAY ON TIME SCALES. HNUE Journal of Science: Journal of Natural Sciences, [S. l.], v. 71, n. 2, p. 3–14, 2026. DOI: 10.18173/2354-1059.2026--0015. Disponível em: https://hnuejs.edu.vn/ns/article/view/1462. Acesso em: 11 jul. 2026.