1. Faculty of Agricultural and Food Sciences, Széchenyi István University, Mosonmagyaróvár-Hungary, Lucsony u. 15-17, 9200 Mosonmagyaróvár, Hungary.
2. AgroCares, Nieuwe Kanaal 7C, 6709 PA Wageningen, the Netherlands.
3. Research Institute of Agricultural Economics, National Agricultural Research and Innovation Center, Budapest-Hungary, IX. Zsil utca 3-5, 1093 Budapest, Hungary.
4. Csernozjom Kft. Arany János u 10, 5065 Nagykörű, Hungary.