Cited references
Fränzle S, Markert B, Wünschmann S (2012) Introduction to Environmental Engineering. Wiley-VCH, Weinheim.
Markert B, Wünschmann S, Fränzle S, Delakowitz B (2012) Alternative energy sources, dwindling fossil resources and nuclear opt-out: a joint challenge and chance for re-shaping industrial societies. Encyclopedia of Environmental Management, Taylor & Francis, Encyclopedias Program, New York NY 100017, U.S.A.; in press.