Attribution-NonCommercial-ShareAlike 4.0 International

You are free to:

• Share: Copy and redistribute the material
• Adapt: Remix, transform, and build upon the material

Under these terms:

• Attribution: You must give appropriate credit.
• NonCommercial: You may not use for commercial purposes.
• ShareAlike: Distribute derivatives under same license.

Full text: https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode