@inproceedings{TUW-113838, author = {Filzmoser, Peter and Janauer, Georg and Exler, Norbert}, title = {A statistical method for finding indicators of water quality}, booktitle = {How to assess and monitor ecological quality in freshwaters}, year = {2003}, editor = {Ruoppa, M. and Heinonen, P, and Pilke, A. and Rekolainen, S. and Toivonen, H. and Vuoristo, H.}, pages = {19--23}, publisher = {Nordic Council of Ministers}, address = {Copenhagen}, note = {invited} }