Le, Anh Minh, Thi Thu Nguyen, and Thanh Tra Nguyen. “ASYMPTOTIC PERIODIC SOLUTIONS TO A CLASS OF NON-DENSELY DEFINED DIFFERENTIAL EQUATIONS WITH INFINITE DELAY”. Hong Duc University Journal of Science, no. 7 (July 30, 2026): 137-144. Accessed October 8, 2026. https://hdujs.edu.vn/index.php/js/article/view/1013.