Dang, T. and Lam, S. (2019) “LICENSED OPERATION OF COPYING WORKS OF COPYRIGHT OWNERS IN THE EDUCATIONAL SYSTEM-SITUATIONS AND SUGGESTIONS”, TRA VINH UNIVERSITY JOURNAL OF SCIENCE; ISSN: 2815-6072; E-ISSN: 2815-6099, 7(25), pp. 28-34. doi: 10.35382/18594816.1.25.2017.116.