@inbook{DiatomBase:SourceID:268715, author = {Lange-Bertalot, H. & Metzeltin, D.}, journal = {In: Lange-Bertalot, H. (ed.), Iconographia Diatomologica. Annotated Diatom Micrographs. Vol. 2. Ecology, Diversity, Taxonomy. Koeltz Scientific Books. Königstein, Germany,}, title = {Indicators of oligotrophy - 800 taxa representative of three ecologically distinct lake types, Carbonate buffered - Oligodystrophic - Weakly buffered soft water}, url = {https://www.diatombase.org/aphia.php?p=sourcedetails&id=268715}, volume = {390}, year = {1996} }