Authors
A. Zigurs
Riga, Latvia
K. Locmelis
Riga, Latvia
U. Sarma
Riga, Latvia
© 2019 A. Zigurs, M. Balodis, P. Ivanova, K. Locmelis, U. Sarma, published by Institute of Physical Energetics
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.