Van Dan, Nguyen, 		Van Duy, Hoang, 		Thuy Linh, Van, AND 		Duy Hung, Tran.
" Characteristics of Hydro-geochemictry and Its Zoning in Hai Duong Urban Area" <em>VNU Journal of Science: Earth and Environmental Sciences</em> [Online], Volume 34 Number 4 (24 December 2018)