D. E. Avison, F. Lau, M. D. Myers, and P. A. Nielsen, Action research, Communications of the ACM, vol.42, issue.1, pp.94-97, 1999.
DOI : 10.1145/291469.291479

N. Ducheneaut, Socialization in an Open Source Software Community: A Socio-Technical Analysis, Computer Supported Cooperative Work (CSCW), vol.32, issue.7, pp.323-368, 2005.
DOI : 10.1007/s10606-005-9000-1

R. A. Ghosh, R. Glott, B. Krieger, and G. Robles, Free/Libre and Open Source Software: Survey and study ? FLOSS ? Part 4: Survey of developers The Netherlands, Final Report, 2002.

M. Hahsler, A quantitative study of the adoption of design patterns by Open Source software developers, Free/Open Source Software Development , chapter 5, pp.103-123, 2005.

G. W. Harrison and J. A. List, Field Experiments, Journal of Economic Literature, vol.42, issue.4, pp.1009-1055, 2004.
DOI : 10.1257/0022051043004577

URL : https://hal.archives-ouvertes.fr/hal-00736951

H. Kagdi, M. L. Collard, and J. I. Maletic, A survey and taxonomy of approaches for mining software repositories in the context of software evolution, Journal of Software Maintenance and Evolution: Research and Practice, vol.12, issue.2, pp.77-131, 2007.
DOI : 10.1002/smr.344

T. D. Latoza, G. Venolia, and R. Deline, Maintaining mental models, Proceeding of the 28th international conference on Software engineering , ICSE '06, pp.492-501, 2006.
DOI : 10.1145/1134285.1134355

A. Mockus, R. T. Fielding, and J. Herbsleb, Two case studies of open source software development: Apache and Mozilla, ACM Transactions on Software Engineering and Methodology, vol.11, issue.3, pp.309-346, 2002.
DOI : 10.1145/567793.567795

C. Oezbek and L. Prechelt, On Understanding How to Introduce an Innovation to an Open Source Project, First International Workshop on Emerging Trends in FLOSS Research and Development (FLOSS'07: ICSE Workshops 2007), pp.40-44, 2007.
DOI : 10.1109/FLOSS.2007.11

J. W. Paulson, G. Succi, and A. Eberlein, An empirical study of open-source and closed-source software products, IEEE Transactions on Software Engineering, vol.30, issue.4, pp.246-256, 2004.
DOI : 10.1109/TSE.2004.1274044

J. Preece, B. Nonnecke, and D. Andrews, The top five reasons for lurking: improving community experiences for everyone, Computers in Human Behavior, vol.20, issue.2, pp.201-223, 2004.
DOI : 10.1016/j.chb.2003.10.015

L. and Q. García, Die Kontaktaufnahme mit Open Source Software-Projekten

E. S. Raymond, The cathedral and the bazaar, First Monday, vol.3, issue.3, 1998.

J. A. Whittaker, What is software testing? And why is it so hard?, IEEE Software, vol.17, issue.1, pp.70-79, 2000.
DOI : 10.1109/52.819971

H. Zhu, P. A. Hall, and J. H. May, Software unit test coverage and adequacy, ACM Computing Surveys, vol.29, issue.4
DOI : 10.1145/267580.267590

. Many, F. To-gesine-milde, and . Thiel, Lutz Prechelt, the FreeCol maintainers and test masters, and two anonymous reviewers who read early versions of this paper