Häring, Anna; Dabbert, Stephan; Aurbacher, Joachim; Bichler, Barbara; Eichert, Christian; Gambelli, Danilo; Lampkin, Nicolas; Offermann, Frank; Olmos, Santiago; Tuson, Jon and Zanoli, Raffaele (2004) Organic farming and measures for European agricultural policy. Organic Farming in Europe: Economics and Policy, Vol. 11. Universität Hohenheim.