Book cover

License

© 2025 Uli Hitzel  

This book is released under the Creative Commons Attribution–NonCommercial 4.0 International license (CC BY-NC 4.0).  
You may copy, distribute, and adapt the material for any non-commercial purpose, provided you give appropriate credit, include a link to the license, and indicate if changes were made. For commercial uses, please contact the author.
Version 0.1, last updated July 8th 2025