Authors
Michal Halaška
Silesian University in Opava, School of Business Administration in Karvina, Karviná
Roman Šperka
Silesian University in Opava, School of Business Administration in Karvina, Karviná
© 2018 Michal Halaška, Roman Šperka, published by University of Maribor
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.