About this article
Published Online: Dec 13, 2018
Page range: 228 - 246
DOI: https://doi.org/10.2478/eb-2018-0018
Keywords
© 2018 Aleksandrs Kotlars, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.
Kotlars, Aleksandrs
Riga Technical University,Riga, Latvia