1. Vilnius Gediminas Technical University, Lithuania and Faculty of Applied Economics, University of Antwerp, Prinsstraat 13, 2000, Belgium
2. Mykolas Romeris University, Ateities g. 20, LT-08303 Vilnius, Lithuania
3. Lithuanian Institute of Agrarian Economics, V. Kudirkos g. 18, LT-03105, Vilnius