1. BNatschG, 2009. Gesetz über Naturschutz und Landschaftspflege. Bundesnaturschutzgesetz - BNatSchG. – Bundesgesetzblatt I, (51): 2542-2579 [valid from 01.03.2010].
2. Braat, L., ten Brink P. (eds.), 2008. The Cost of Policy Inaction The case of not meeting the 2010 biodiversity target, Alterra, Wageningen.
3. Burkhard, B., Kroll, F., Müller, F., Windhorst, W., 2009. Landscapes Capacities to Provide Ecosystem Services – a Concept for Land-Cover Based Assessments. Landscape Online 15: 1-22. Doi: 10.3097/LO. 200915.
4. Ecosystem Service Potentials, Flows and Demands – Concepts for Spatial Localisation;Burkhard;Indication and Quantification. Landscape Online,2014
5. CBD - Convention on Biological Diversity, 2012. Users's manual for the City Biodiversity Index. 25 p.