Authors
Beata Bieszk-Stolorz
University of Szczecin Faculty of Economics and Management Institute of Econometrics and Statistics Mickiewicza 64, 71-101, Szczecin, Poland
Iwona Markowicz
University of Szczecin Faculty of Economics and Management Institute of Econometrics and Statistics Mickiewicza 64, 71-101, Szczecin, Poland