@misc{petersen_process_identification_2001, author={Petersen, W., Bertino, L., Callies, U., Zorita, E.}, title={Process identification by principal component analysis of river water-quality data}, year={2001}, howpublished = {journal article}, note = {Petersen, W.; Bertino, L.; Callies, U.; Zorita, E.: Process identification by principal component analysis of river water-quality data. Ecological Modelling. 2001. vol. 138, no. 1 - 3, 193-213.}}