… always cite all of the the following publications in your  own publication (click for details):

• Schäfer (2015)
• Schäfer & Bildhauer (2012)

If the journal/proceedings/publisher guidelines allow it, also reference the texrex and COW tool chain software repository URLs on GitHub:

• texrex (https://github.com/rsling/texrex)
• COW tool chain (https://github.com/rsling/cow)