I wrote "Haskell: Build a Yesod web app" for LinuxFormat magazine, issue 201.
I also wrote "LaTeX: make text beautiful" for the same issue.
All of them were made using LaTeX (for an article).
I wrote "Write a book in LaTeX" for Linux User and Developer issue 150.
I also wrote "Get your network information using lsof" for Linux User Developer issue 150.