1. Fedesoft. News ICT: (2011).
http://www.fedesoft.org
2. Canos, J.H., Penadés, C.: Agile methodologies in software development. In: VIII Conference on Software Engineering and Databases (JISBD) (2003). 123456789/476
3. Costello, R.J., Liu, D.B.: Metrics for requirements engineering. J. Syst. Softw. (1995).
https://doi.org/10.1016/0164-1212(94)00127-9
4. Beck, K., Andres, C.: Extreme Programming Explained: Embrace Change, 2nd edn. Addison-Wesley Professional, US (2004). ISBN: 0-201-61641-6
5. Pendharkar, P.C., Roger, J.A.: The relationship between software development software development team size and cost. Commun. ACM 52(1), 141–144 (2009).
https://doi.org/10.1145/1435417.1435449