Vigencia

License

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0. International License.

You are free to:

1. Share — copy and redistribute the material in any medium or format
2. The licensor cannot revoke these freedoms as long as you follow the license terms.

Under the following terms:

1. Attribution — You must give appropriate credit , provide a link to the license, and indicate if changes were made . You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
2. NonCommercial — You may not use the material for commercial purposes .
3. NoDerivatives — If you remix, transform, or build upon the material, you may not distribute the modified material.
4. No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.