Creative Commons License
Copyright (c) Stefano Cecere
CC BY-NC-SA: Attribution-Non Commercial-Share Alike
Anyone is free to share & adapt the work for any non-commercial use, as long as they give appropriate credit, provide a link to the license, and indicate if changes were made to the original material. Any derivative works must share the same license as the original material.
https://creativecommons.org/licenses/by-nc-sa/4.0/