1. OpenStack Docs: Hacking: OpenStack Hacking Guideline Enforcement.
https://docs.openstack.org/hacking/latest/user/hacking.html
2. User talk: OpenStack Quality Improvement Plan.
https://wiki.openstack.org/wiki/User_talk:P%C3%A9ter_Heged%C5%B1s
3. How To Contribute - OpenStack (2018).
https://wiki.openstack.org/wiki/How_To_Contribute
. Accessed 09 Apr 2018
4. OpenStack Docs: Modules List (2018).
https://docs.openstack.org/puppet-openstack-guide/latest/contributor/module-list.html
. Accessed 09 Apr 2018
5. Advani, D., Hassoun, Y., Counsell, S.: Extracting refactoring trends from open-source software and a possible solution to the ‘related refactoring’ conundrum. In: Proceedings of the 2006 ACM Symposium on Applied Computing, SAC 2006, pp. 1713–1720. ACM, New York (2006).
http://doi.acm.org/10.1145/1141277.1141685