@mvidner I'd slightly edit the text:

> Use format like bnc#775814 or gh#42 (gh#yast/yast-foo#42 in `*.changes` files). See also [GitHub autolikning](https://help.github.com/articles/github-flavored-markdown#references) and [openSUSE reference abbreviations](http://en.opensuse.org/openSUSE:Packaging_Patches_guidelines#Current_set_of_abbreviations).

The idea is to simplify and to put references at the end (most people won't need them).

OK with you?