Authors
Mihaela Pop
Sunnybrook Research Institute, Toronto
University of Toronto, Toronto, Canada
Nicoleta Stefu
Faculty of Physics, West University of Timisoara, Timisoara, Romania
© 2020 Mihaela Pop, Nicoleta Stefu, published by West University of Timisoara
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.