O artykule
Data publikacji: 20 lip 2017
Zakres stron: 298 - 304
DOI: https://doi.org/10.1515/kbo-2017-0049
Słowa kluczowe
© 2017
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.
Stoilova, Veronika
“Neofit Rilski” South-West University,Blagoevgrad, Bulgaria