Authors
Bartłomiej Kluczyński
Bartlomiej.G.Kluczynski@gmail.com
Institute of Mathematics, Lodz University of Technology, Lodz, Poland
Bartlomiej.G.Kluczynski@gmail.com
© 2019 Bartłomiej Kluczyński, published by Ovidius University of Constanta
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.