Authors
University of Szczecin, Finance and Management Faculty, Econometrics and Statistics Department, Szczecin, Poland
University of Szczecin, Finance and Management Faculty, Econometrics and Statistics Department,, Szczecin, Poland
© 2020 Iwona Foryś, Ewa Putek-Szeląg, Beata Ziembicka, published by University of Szczecin
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.