Copyright (c) 2019 René Pinto Ruiz, Roselia Ramírez Díaz, Francisco Guevara Hernández, Deb Raj Aryal, José Apolonio Venegas Venegas, Luis Alberto Miranda Romero, Alexander Chacón Castillo
![Creative Commons License](http://i.creativecommons.org/l/by/4.0/88x31.png)
This work is licensed under a Creative Commons Attribution 4.0 International License.