Authors
Grigore Călugăreanu
Department of Mathematics, Babeş-Bolyai University, Cluj-Napoca, Romania
Horia F. Pop
Department of Computer Science, Babeş-Bolyai University, Cluj-Napoca, Romania
© 2020 Grigore Călugăreanu, Horia F. Pop, published by Ovidius University of Constanta
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.