CHAU, Dang Dinh. On the asymptotic equivalence of linear differential equation in hilbert spaces. VNU Journal of Science: Mathematics - Physics, [S.l.], v. 18, n. 2, june 2002. ISSN 2588-1124. Available at: <https://js.vnu.edu.vn/MaP/article/view/3310>. Date accessed: 05 dec. 2024.