Press INRA, 02. February 2009 (in French) INRA, 18. February 2009 (in French) Républicain Lorrain, 18. August 2009 (in French) Paysan du 68 and L'est agricole et viticole (in French) Wochenblatt 34/2009 (in German) Wochenblatt 24/2009 (in German) Article published by FVA (CREFF-WP2) in the Forstarchiv journal - December 2010 Press here SRC Information meeting - Area of Mettmann, cities of Solingen, Wuppertal and Remscheid Press here Writing: coord Creation date: 03 March 2009 Update: 08 October 2009