Published Online: Dec 01, 2016
Page range: 3 - 5
DOI: https://doi.org/10.2478/mipo-2018-0005
© 2018 Michał Sachanbiński, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.
Michał Sachanbiński
Adam Szuszkiewicz