@misc{heisterkamp_bioassaydirected_chemical_2004, author={Heisterkamp, I., Gandrass, J., Ruck, W.}, title={Bioassay-Directed Chemical Analysis Utilizing LC-MS: A Tool for Identifying Estrogenic Compounds in Surface Waters?}, year={2004}, howpublished = {journal article}, note = {Heisterkamp, I.; Gandrass, J.; Ruck, W.: Bioassay-Directed Chemical Analysis Utilizing LC-MS: A Tool for Identifying Estrogenic Compounds in Surface Waters?. Analytical and Bioanalytical Chemistry. 2004. vol. 378, no. 3, 709-715.}}