1.
Dinh Phu N, Thanh Long H. THE EXPANSIONS AND APPLICATIONS OF GRONWALL – BELLMAN’S LEMMA. Science and Technology Development Journal [Internet]. 30Sep.2001 [cited 16May2024];4(8&9):48-9. Available from: http://stdj.scienceandtechnology.com.vn/index.php/stdj/article/view/3514