Anh, Bui, 		Hoai, Tran, 		Anh, Nguyen, AND 		Huy, Dao.
" Research on Resources and Environment                                 of Vietnam’s Higher Education System in Accordance        with U21 Ranking of National Higher Education Systems" <em>VNU Journal of Science: Education Research</em> [Online], Volume 37 Number 3 (17 August 2021)