Le, A. M., Nguyen, . T. T. and Nguyen, T. T. (2026) “ASYMPTOTIC PERIODIC SOLUTIONS TO A CLASS OF NON-DENSELY DEFINED DIFFERENTIAL EQUATIONS WITH INFINITE DELAY”, Hong Duc University Journal of Science, (7), pp. 137-144. doi: 10.70117/hdujs.E11.7.2026.1013.