Biological effect and chemical monitoring of Watch List substances in European surface waters: Steroidal estrogens and diclofenac – Effect-based methods for monitoring frameworks oleh Eszter Simon, Anja Duffek, Cordula Stahl, Manfred Frey, Marco Scheurer, Jochen Tuerk, Linda Gehrmann, Sarah Könemann, Kees Swart, Peter Behnisch, Daniel Olbrich, Franҫois Brion, Selim Aït-Aïssa, Robert Pasanen-Kase, Inge Werner, Etiënne L.M. Vermeirssen