1. Alleman, G.B., 2002, Agile Project Management methods for IT Projects, Chapter X, pp(1-22), In: The Story of Managing Projects: A Global, Cross– Disciplinary Collection of Perspectives, Carayannis, E.G. and Kwak, Y.H. (Eds.), Greenwood Press /Quorum Books, CT.
2. Beck, K., 1999.Embracing change with extreme programming.IEEE Computer, 32(10), 70-77.
3. Berki, E., Siakas, K., &Georgiadou, E., 2007. Agile Quality or Depth of Reasoning?Applicability vs. Suitability with Respect to Stakeholders’ Needs. In I. Stamelos, & P. Sfetsos (Eds.), Agile Software Development Quality Assurance (pp. 23-55). Hershey, PA.
4. Boehm, B.W., 1981, Software Engineering Economics, Prentice Hall Inc., Upper Saddle river, New Jersey.
5. Boehm, B., 2000. Requirements that handle IKIWISI, COTS, and rapid change.IEEE Computer, 33, 99-102.