HOANG, Thi Van.
The Approximate Controllability for the Linear System Described by Generalized Invertible Operators.
VNU Journal of Science: Mathematics - Physics, [S.l.], v. 20, n. 3, sep. 2004.
ISSN 2588-1124.
Available at: <https://js.vnu.edu.vn/MaP/article/view/4146>. Date accessed: 05 dec. 2024.