Schutzgemeinschaft Deutscher Wald (Association for the Protection of German Forests): www.sdw.de

Forest Stewardship Council: www.fsc.org

Programme for the Endorsement of Forest Certification schemes: www.pefc.org

TÜV Nord-Cert : www.tuev-nord-cert.de

United Nations Framework Convention on Climate Change: www.unfccc.int

Information about CO2 trading: www.co2-handel.de

Fichtner platform on climate change: www.klimahandel.info