1. Institute for Animal Breeding, Nutrition and Laboratory Animal Science, University of Veterinary Medicine Budapest, István u., 1078 Budapest, Hungary
2. Institute of Agronomy, Hungarian University of Agriculture and Life Science, Páter Károly u. 1, 2100 Gödöllő, Hungary
3. The Hungarian Chamber of Agriculture, Fehérvári út 89-95, 1119 Budapest, Hungary
4. Centre for Agricultural Research, Institute for Soil Sciences, Herman O. út 15, 1022 Budapest, Hungary
5. Institute of Environmental Sciences, Hungarian University of Agriculture and Life Sciences, Páter Károly u. 1, 2100 Gödöllő, Hungary
6. Department of Botany, University of Veterinary Medicine Budapest, Rottenbiller u. 50, 1077 Budapest, Hungary