Authors
Monica Florentina Calopereanu
The Bucharest University of Economic Studies, Bucharest, Romania
Alin-Nicușor Calopereanu
The Bucharest University of Economic Studies, Bucharest, Romania
© 2017 Monica Florentina Calopereanu, Alin-Nicușor Calopereanu, published by Bucharest University of Economic Studies
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.