Ngo, T. N. M., Nguyen, M. N., Cao, L. N. H., Tran, T. B. Q., Nguyen, V. N. H. and Tran, N. P. L. (2023) “Study of the activation of Truc Thon ball clay by acids”, CTU Journal of Innovation and Sustainable Development , 15(3), pp. 92-102. doi: 10.22144/ctujoisd.2023.054.