Authors
I. Zikmanis
Institute of Physical Energetics, Riga, Latvia
A.-M. Dumitrescu
University Politehnica of Bucharest, Bucharest, Romania
© 2020 A. Mutule, I. Zikmanis, A.-M. Dumitrescu, published by Institute of Physical Energetics
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.