Copyright

Copyright Notice

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License. Authors retain copyright and grant the journal right of first publication. You are free to:

• Share — copy and redistribute the material in any medium or format for any purpose, even commercially.
• Adapt — remix, transform, and build upon the material for any purpose, even commercially.

The licensor cannot revoke these freedoms as long as you follow the license terms. Under the following terms:

• 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.
• ShareAlike — If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original.

No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.