Au, N., Bao, T., Nhi, P., Vy, T., Hien, T., Hiep, T. and Linh, L. (2020) “Entropy weight application for calculating groundwater quality index (EWQI) in groundwater quality zoning in Pleistocene aquifer in the Phu My town, Ba Ria – Vung Tau province”, VNUHCM Journal of Earth Science and Environment, 4(1), pp. 140-148. doi: https://doi.org/10.32508/stdjsee.v4i1.533.