Authors
Jelena Jocković
Faculty of Mathematics, University of Belgrade, Belgrade, Serbia
Bojana Todić
Faculty of Mathematics, University of Belgrade, Belgrade, Serbia
© 2024 Jelena Jocković, Bojana Todić, published by Ovidius University of Constanta
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.