Authors
József Abaffy
abaffy.jozsef@nik.uni-obuda.hu
Institute of Applied Mathematics, Óbuda University, Budapest, Hungary
abaffy.jozsef@nik.uni-obuda.hu
© 2022 József Abaffy, published by Corvinus University of Budapest
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.