À propos de cet article
Publié en ligne: 18 juil. 2019
Pages: 121 - 142
Reçu: 18 avr. 2018
Accepté: 22 mai 2018
DOI: https://doi.org/10.2478/amsil-2018-0007
Mots clés
© 2019 Piotr Gwiżdż, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Gwiżdż, Piotr
Institute of Mathematics, University of SilesiaKatowice, Poland