Nguyet, Vu Thi Minh, and Vu Thi Minh Nguyet. 2016. “Hydrogeochemical Characteristics of Karst Groundwater in Tam Diep, Ninh Binh, Vietnam”. Acta Carsologica 45 (3). Ljubljana, Slovenija. https://doi.org/10.3986/ac.v45i3.3588.