Happe, Kathrin, Martin Damgaard, Amanda Osuch, Claudia Sattler, Peter Zander, Sandra Uthes, Johannes Schuler, and Annette Piorr. 2006. “CAP-Reform and the Provision of Non-Commodity Outputs in Brandenburg”. German Journal of Agricultural Economics 55 (5-6). https://doi.org/10.52825/gjae.v55i5-6.1667.