Authors
Ioan Dumitru
Physics Department, Alexandru Ioan Cuza University, Iasi, Romania
Alexandru Stancu
Physics Department, Alexandru Ioan Cuza University, Iasi, Romania
© 2017 Iordana Astefanoaei, Ioan Dumitru, Alexandru Stancu, published by West University of Timisoara
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.