| Drugs and personal care products as ubiquitous pollutants: occurrence and distribution of clofibric acid, caffeine an DEET in the North Sea |  |
| Weigel, S.; Kuhlmann, J.; Hühnerfuss, H. (2002). Drugs and personal care products as ubiquitous pollutants: occurrence and distribution of clofibric acid, caffeine an DEET in the North Sea Sci. Total Environ. 295: 131-141 |
| In: Science of the Total Environment. Elsevier: Amsterdam. ISSN 0048-9697, meer |
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