About this article
Published Online: Dec 01, 2016
Page range: 7 - 10
DOI: https://doi.org/10.1515/mipo-2017-0002
© 2018 Andrzej Krzyżanowski, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.
Andrzej Krzyżanowski
Faculty of Energy and Fuels AGH UST,Kraków, Poland