TY - CONF A1 - Hangen, Edzard A1 - Biemelt, Detlef A1 - Grünewald, Uwe T1 - Water quality of post-mining lakes in the Lusatian lignite mining district Y1 - 2004 UR - https://opus4.kobv.de/opus4-UBICO/frontdoor/index/index/docId/1803 ER -