“SOIL TREATMENT BY BENTONITE AND FLY ASH FOR LINERS OF WASTE LANDFILL: A CASE STUDY IN VIETNAM”, INTERNATIONAL JOURNAL OF GEOMATE, vol. 17, no. 63, pp. 315–322, Jun. 2019, Accessed: Jul. 05, 2026. [Online]. Available: https://geomatejournal.com/geomate/article/view/2590