Authors
Katarzyna Śledziewska
University of Warsaw, Faculty of Economic Sciences, Warsaw, Poland
Tinatin Akhvlediani
University of Warsaw, Faculty of Economic Sciences, Warsaw, Poland
© 2017 Katarzyna Śledziewska, Tinatin Akhvlediani, published by Faculty of Economic Sciences, University of Warsaw
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.