I. Pe\ narrocha, D. Dolz, Romero, and R. Sanchis. 2012 IV International Congress on Ultra Modern Telecommunications and Control Systems, page 35--40. IEEE, (October 2012)
D. Paulish, R. Nord, and D. Soni. Joint proceedings of the second international software architecture workshop (ISAW-2) and international workshop on multiple perspectives in software development (Viewpoints '96) on SIGSOFT '96 workshops, page 126--129. New York, NY, USA, ACM, (1996)
D. Ackerberg, C. Benkard, S. Berry, and A. Pakes. Volume 6, Part 1, chapter Chapter 63 Econometric Tools for Analyzing Market Outcomes, page 4171--4276. Elsevier, (2007)