@inproceedings{TUW-117682, author = {Janauer, Georg and Lanz, E. and Filzmoser, Peter and Exler, Norbert}, title = {Breg and Brigach, source streams of the Danube: changes based on macrophyte surveys 1967, 1989, and 2004}, booktitle = {Proceedings 36th International Conference of IAD}, year = {2006}, pages = {86--90}, publisher = {Austrian Committee Danube Research/IAD}, address = {Wien}, isbn = {978-3-9500723-2-7} }