Authors
Katarzyna Cheba
West Pomeranian University of Technology in Szczecin, Dep. of Applied Mathematics in Economics
© 2019 Beata Zofia Filipiak, Marek Dylewski, Katarzyna Cheba, published by University of Information Technology and Management in Rzeszow
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.