À propos de cet article
Publié en ligne: 26 juin 2017
Pages: 183 - 196
DOI: https://doi.org/10.1515/cait-2017-0025
Mots clés
© 2017 Nina Stancheva et al., published by De Gruyter Open
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Stancheva, Nina
Faculty of Mathematic and Informatics, University of Plovdiv “Paisii Hilendarski”Plovdiv, Bulgaria
Stoyanova-Doycheva, Asya
Faculty of Mathematic and Informatics, University of Plovdiv “Paisii Hilendarski”Plovdiv, Bulgaria
Stoyanov, Stanimir
Faculty of Mathematic and Informatics, University of Plovdiv “Paisii Hilendarski”Plovdiv, Bulgaria
Popchev, Ivan
Faculty of Economics and Social Sciences, University of Plovdiv “Paisii Hilendarski”Plovdiv, Bulgaria
Ivanova, Vanya
Faculty of Mathematic and Informatics, University of Plovdiv “Paisii Hilendarski”Plovdiv, Bulgaria