Trinh Hoai, T.; Tran Thi, T. H.; Le Thi , P. Q.; Vu Le , P.; Le Duc, A.; Mai Duc , D. Groundwater Quality Evaluation Using Water Quality Index and GIS Technique for the Holocene and Pleistocene Aquifers in the Coastal Zone of Ninh Thuan Province. VJMST 2021, 21, 133-148.