Authors
Alladyn Elmgasbi
Uniwersytet Łódzki, Wydział Ekonomiczno-Socjologiczny, Instytut Finansów
© 2019 Alladyn Elmgasbi, published by University of Information Technology and Management in Rzeszow
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.