This is the latest version of the Network Calculus book by Jean-Yves Le Boudec and Patrick Thiran. The original version is available as Springer-Verlag Lecture Notes on Computer Science number 2050.
The source files (latex and images) are also available. You may use them and the pdf under the Attribution-NonCommercial-Sharealike license, i.e. you may re-use, re-mix and redistribute for non commercial purposes as long as proper credit is given to the original authors and that a similar license is given to others.