INFLUENCE OF THE ENDOCRINE DISRUPTOR 17″-ETHINYLESTRADIOL ON PHYTOPLANKTON DIVERSITY IN AQUATIC MICROCOSMS Publication Attachment: 02-362.pdf Authors: Hense, Burkhard A., Jaser, Wolfgang, Severin, Gabriele F., Welzl, Gerhard, Pfister, Gerd, Schramm, Karl- Werner Year: 2002