Authors
C. A. Castillo-Guillén
Department of Mathematics, Universidades para el Bienestar Benito Juárez García, México City
C. Álvarez-García
Department of Mathematics, Universidad Autónoma Metropolitana-I, México City
© 2022 C. A. Castillo-Guillén, C. Álvarez-García, published by Ovidius University of Constanta
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.