Published Online: Dec 31, 2019
Page range: 17 - 21
DOI: https://doi.org/10.2478/saec-2019-0025
Keywords
© 2019 Gabriel Hasmațuchi, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Gabriel Hasmațuchi
Universitatea „Lucian Blaga” din Sibiu,