Authors
Orli Herscovici
Department of Mathematics, Technion – Israel Institute of Technology, Haifa, Israel
Toufik Mansour
Department of Mathematics, University of Haifa, Haifa, Israel
© 2020 Orli Herscovici, Toufik Mansour, published by Corvinus University of Budapest
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.