1R. F, H u ttl & W. Gerwin. Ecological development of post-mining landscapes in the Lusatian lignite minifng district. Sustainable Post-Industrial Land Management 4-6 November, 2004, Krak o w, Poland.
2Judith M. Emscher Park, Germany-expanding the definition of a "park" . In: David Harmon,eds. Crossing Boundaries in Management: Proceedings of the 11th Conference on Research and Resource Management in parks and on Public Lands. Hancock, Michigan: The George Wright Society, 2001 : 222-227.
