Authors
tomasz.stachurski@ue.katowice.pl
University of Economics in Katowice, College of Management, Department of Statistics, Econometrics and Mathematics, Katowice
tomasz.stachurski@ue.katowice.pl
© 2021 Tomasz Stachurski, published by Poznań University of Economics and Business Press
This work is licensed under the Creative Commons Attribution 4.0 License.