Tham, Trinh Thi, 		Thi Hien, Do, 		Thuy Chung, Nguyen, AND 		Tra Mai, Ngo.
" Assessment of Groundwater Quality in the Holocene Aquifer in Duy Tien District, Ha Nam Province using Groundwater Quality Index (GWQI)" <em>VNU Journal of Science: Earth and Environmental Sciences</em> [Online], Volume 38 Number 1 (24 March 2022)