Møller, Ingelise, Verner H. Søndergaard, and Flemming Jørgensen. “Geophysical Methods and Data Administration in Danish Groundwater Mapping”. GEUS Bulletin 17 (July 8, 2009): 41–44. Accessed April 20, 2024. https://geusbulletin.org/index.php/geusb/article/view/5010.