1.Hoang NV, Roi ND. Finite element method in estimation of lag time of rainfall recharge to Holocene groundwater aquifer in Hung Yen province. Vietnam J. Earth Sci. [Internet]. 2015 Dec. 5 [cited 2025 Dec. 5];37(4):355-62. Available from: https://vjs.ac.vn/jse/article/view/8300