1. István Széchenyi Economics and Management Doctoral School, Alexandre Lamfalussy Faculty of Economics, University of Sopron, 9400 Sopron, Hungary
2. Hungarian National Bank—Research Center, John von Neumann University, 6000 Kecskemét, Hungary
3. Department of Investment, Finance and Accounting, Hungarian University of Agriculture and Life Sciences, Páter Károly Str. 1, 2100 Gödöllő, Hungary