About this article
Published Online: Jun 12, 2020
Page range: 13 - 22
DOI: https://doi.org/10.2478/bile-2020-0002
Keywords
© 2020 Aneta Sawikowska, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.
Sawikowska, Aneta
Poznań, Poland
Department of Mathematical and Statistical Methods, Poznań University of Life SciencesPoznań, Poland