misc

documents/si-units/README.md

@@ -1,2 +1,6 @@
 Read the [manual](ftp://ftp.tex.ac.uk/tex-archive/macros/latex/exptl/siunitx/siunitx.pdf)
 for more information how `siunitx` works.
+
+Material
+--------
+* [Why use a package to typeset units?](http://tex.stackexchange.com/q/107818/5645)