Authors
University of Warmia and Mazury in Olsztyn, Faculty of Economic Sciences, Olsztyn, Poland
© 2022 Małgorzata Grzywińska-Rąpca, Nelson Duarte, Altin Kulli, Goci Enkelejda, published by Faculty of Economic Sciences, University of Warsaw
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.