J. P. Allen, Open Source Deployment at the City and County of San Francisco: From Cost Reduction to Rapid Innovation, 2010 43rd Hawaii International Conference on System Sciences, pp.1-10, 2010.
DOI : 10.1109/HICSS.2010.295

C. Y. Baldwin and K. B. Clark, The Architecture of Participation: Does Code Architecture Mitigate Free Riding in the Open Source Development Model?, Management Science, vol.52, issue.7, pp.1116-1127, 2006.
DOI : 10.1287/mnsc.1060.0546

P. G. Capek, S. P. Frank, S. Gerdt, and D. Shields, A history of ibm's open-source involvement and strategy. IBM Syst, J, vol.44, pp.249-257, 2005.

E. Capra, C. Francalanci, F. Merlo, and C. Rossi-lamastra, A Survey on Firms??? Participation in Open Source Community Projects, Open Source Ecosystems: Diverse Communities Interacting, IFIP Advances in Information and Communication Technology, pp.225-236, 2009.
DOI : 10.1109/HICSS.2005.166

J. Dedrick and J. West, An exploratory study into open source platform adoption, 37th Annual Hawaii International Conference on System Sciences, 2004. Proceedings of the, pp.1-10, 2004.
DOI : 10.1109/HICSS.2004.1265633

URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=

F. Hecker, Setting up shop: The business of open-source software, IEEE Software, vol.16, issue.1, pp.45-51, 1999.
DOI : 10.1109/52.744568

R. W. Joode and M. Bruijne, The organization of open source communities: Towards a framework to analyze the relationship between openness and reliability, Hawaii International Conference on System Sciences, p.118, 2006.

K. Lakhani and R. G. Wolf, Why Hackers Do What They Do: Understanding Motivation and Effort in Free/Open Source Software Projects, SSRN Electronic Journal, pp.1-27, 2003.
DOI : 10.2139/ssrn.443040

G. Lawton, The Changing Face of Open Source, Computer, vol.42, issue.5, pp.14-17, 2009.
DOI : 10.1109/MC.2009.162

J. Lerner and J. Tirole, Some Simple Economics of Open Source, The Journal of Industrial Economics, vol.50, issue.2, pp.197-234, 2002.
DOI : 10.1111/1467-6451.00174

URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=

L. Morgan and P. Finnegan, Benefits and Drawbacks of Open Source Software: An Exploratory Study of Secondary Software Firms, Proceedings of the 3rd IFIP International Conference on Open Source Systems (OSS), pp.307-312, 2007.
DOI : 10.1007/978-0-387-72486-7_33

D. Richter, H. Zo, and M. Maruschke, A Comparative Analysis of Open Source Software Usage in Germany, Brazil, and India, 2009 Fourth International Conference on Computer Sciences and Convergence Information Technology, p.169, 2009.
DOI : 10.1109/ICCIT.2009.169

D. Riehle, The Economic Motivation of Open Source Software: Stakeholder Perspectives, Computer, vol.40, issue.4, pp.25-32, 2007.
DOI : 10.1109/MC.2007.147

D. Riehle, The Economic Case for Open Source Foundations, Computer, vol.43, issue.1, pp.86-90, 2010.
DOI : 10.1109/MC.2010.24

S. Shirali-shahreza and M. Shirali-shahreza, Various aspects of Open Source Software development, 2008 International Symposium on Information Technology, pp.1-7, 2008.
DOI : 10.1109/ITSIM.2008.4631871

I. Stamelos, L. Angelis, A. Oikonomou, and G. L. Bleris, Code quality analysis in open source software development, Information Systems Journal, vol.97, issue.1, pp.43-60, 2002.
DOI : 10.1109/52.744561

URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=

A. Terceiro, L. R. Rios, and C. Chavez, An Empirical Study on the Structural Complexity Introduced by Core and Peripheral Developers in Free Software Projects, 2010 Brazilian Symposium on Software Engineering, 2010.
DOI : 10.1109/SBES.2010.26

I. C. Vincentin, Desenvolvimento de Software Livre no Brasil: estudo sobre a percepção dos envolvidos em relaçãò as motivações ideológicas e de negócios, 2007.