Dirección General Académica, de Investigación y Extensión

License

Creative Commons Attribution License CC-BY 

You are free to:
Share — copy and redistribute the material in any medium or format.
Adapt — remix, transform, and build upon the material for any purpose, including commercially.

Under the following terms:
Attribution — You must give appropriate credit, provide a link to the license, and indicate if any changes have been made. You may do so in any reasonable way, but not in any way that suggests that you or your use is endorsed by the Licensor.