This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Copyright (c) 2019 Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Copyright (c) 2019 Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales