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Publicado en línea: 04 mar 2015
Páginas: 213 - 227
DOI: https://doi.org/10.1515/scr-2015-0006
© by Alin Croitoru
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Alin Croitoru
Lucian Blaga University of Sibiu and University of Bucharest (CESMIG), Romania
Adela Elena Popa
Lucian Blaga University of Sibiu, Romania