History and sources of co-occurring pesticides in an abstraction well unravelled by age distributions of depth specific groundwater samples - Jakobsen, Rasmus; Hinsby, Klaus; Aamand, Jens; van der Keur, Peter; Kidmose, Jacob; Purtschert, Roland; Jurgens, Bryant; Sultenfuss, Jurgen; Albers, Christian (Environmental Science & Technology, 2020)