Show 10 5 10 15 20 50 100 250 Sort by year (new to old) Actions Download search results Subscribe to news feed Your filters: cql: author="Witters, Hilda" or (type exact bookEditor and editor="Witters, Hilda") Add to list Journal Article A1 Inter-laboratory comparison of a yeast bioassay for the determination of estrogenic activity in biological samples Toine FH Bovee, Gerrit Bor, Ilse Becue (UGent) , Frieda EJ Daamen, Majorie BM van Duursen, Sylvi Lehmann, Günter Vollmer, Raffaella De Maria, Jennifer E Fox, Hilda Witters, et al. (2009) ANALYTICA CHIMICA ACTA. 637(1-2). p.265-272