Authors
Marin Marin
Department of Mathematics and Computer Science, Transilvania University of Brasov, 500091, Brasov, Romania
Sorin Vlase
Department of Mechanical Engineering, Transilvania University of Brasov, 500118, Brasov, Romania
© 2017 Marin Marin, Sorin Vlase, published by Ovidius University of Constanta
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.