1. Research associate, Technical University of Munich, School of Management and School of Life Sciences Weihenstephan, Chair of Economics of Horticulture and Landscaping, Alte Akademie 16, 85354 Freising, Germany.
2. Research assistant, Institute for Agricultural Engineering and Animal Husbandry, Bavarian State Research Center for Agriculture, Voettinger Strasse 36, 85354 Freising, Germany.
3. Lecturer, Department of Land Management and Systems, Orchard O05, P.O. Box 85084, Lincoln University, Lincoln 7647, Christchurch, New Zealand.
4. MSc, Technical University of Munich, School of Management and School of Life Sciences Weihenstephan, Chair of Economics of Horticulture and Landscaping, Alte Akademie 16, 85354 Freising, Germany.
5. Professor, Technical University of Munich, School of Management and School of Life Sciences Weihenstephan, Chair of Economics of Horticulture and Landscaping, Alte Akademie 16, 85354 Freising, Germany.