1. I. Dixit and R. Valerdi Challenges in the Development of Systems Engineering as a Profession, to be submitted to Journal of Systems Engineering, preprint 2012.
2. Advance Systems Engineering;Squires;INSIGHT,2009
3. The ROI of Systems Engineering: Some Quantitative Results for Software Intensive Systems;Boehm;Journal of Systems engineering,2008
4. G. Muller, Eirik Hole (editors) The State-of-Practice of Systems Architecting: Where Are We Heading? White Paper Resulting from Architecture Forum Meeting, 2005 (Helsinki, Finland), http://www.architectingforum.org/whitepapers/SAF_WhitePaper_2005_1.pdf.
5. R. O’Brien, 2001. Um exame da abordagem metodológica da pesquisa. In Roberto Richardson (Ed.), Teoria e Prática da Pesquisa Ação [Theory and Practice of Action Research]. João Pessoa, Brazil: Universidade Federal da Paraíba; accessed in the English translation.An Overview of the Methodological Approach of Action Research, University of Toronto http://www.web.ca/robrien/papers/arfinal.html#_edn2, accessed July 25, 2012.