NGHI, Nguyen Van.
On linear multipoint boundary - value problems for index-2 differentiable - algebraic equations.
VNU Journal of Science: Natural Sciences and Technology, [S.l.], v. 15, n. 1, mar. 1999.
ISSN 2588-1140.
Available at: <https://js.vnu.edu.vn/NST/article/view/3728>. Date accessed: 22 nov. 2024.