About this article
Published Online: Aug 03, 2019
Page range: 188 - 213
DOI: https://doi.org/10.2478/rtuect-2019-0013
Keywords
© 2019 Dagnija Blumberga, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.
Blumberga, Dagnija
Institute of Energy Systems and Environment, Riga Technical UniversityRiga, Latvia