Authors
Diana Borlea
Faculty of Mathematics and Computer Science, West University of Timişoara, Romania
Faculty of Social Science, Humanities and Physical Education and Sports, “Vasile Goldiş” Western University of Arad, Romania
© 2018 Diana Borlea, published by West University of Timisoara
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.