About this article
Published Online: Dec 31, 2018
Page range: 109 - 117
DOI: https://doi.org/10.2478/acss-2018-0014
Keywords
© 2018 Konstantins Gusarovs, published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 Public License.
Gusarovs, Konstantins
Riga Technical UniversityRiga, Latvia