1. Yin, R.K.: Case Study Research: Design and Methods, 4th edn. Sage, Thousand Oaks (2009)
2. Basili, V.R., Caldiera, G., Rombach, H.D.: The goal question metric approach. In: Encyclopedia of Software Engineering (1994)
3. Lawrence, R.: Patterns for splitting user stories. Agile For All Blog, 28 October 2009.
http://Agileforall.com/patterns-for-splitting-user-stories/
. Accessed 8 Dec 2016
4. Irwin, B.: Boulders to gravel: techniques for decomposing user stories. VersionOne Blog, 9 May 2014.
https://blog.versionone.com/boulders-to-gravel-techniques-for-decomposing-user-stories/
. Accessed 8 Dec 2016
5. Verwijs, C.: 10 useful strategies for breaking down large User Stories (and a cheatsheet). Agilistic Blog. n.d.
http://blog.agilistic.nl/10-useful-strategies-for-breaking-down-large-user-stories-and-a-cheatsheet/
. Accessed 8 Dec 2016