T. A. Alspaugh, H. A. Asuncion, and W. Scacchi, Intellectual Property Rights Requirements for Heterogeneously-Licensed Systems, 2009 17th IEEE International Requirements Engineering Conference, pp.24-33, 2009.
DOI : 10.1109/RE.2009.22
URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.150.9769

T. A. Alspaugh, W. Scacchi, and H. A. Asuncion, Software Licenses in Context: The Challenge of Heterogeneously Licensed Systems, J. Assoc. Information Systems, vol.11, issue.11, pp.730-755, 2010.

D. Batory, C. Johnson, B. Macdonald, and D. Von-heeder, Achieving extensibility through product-lines and domain-specific languages: a case study, ACM Transactions on Software Engineering and Methodology, vol.11, issue.2, pp.191-214, 2002.
DOI : 10.1145/505145.505147
URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.100.7224

M. Burnett, C. Cook, and G. Rothermel, End-user software engineering, Communications of the ACM, vol.47, issue.9, pp.53-58, 2004.
DOI : 10.1145/1015864.1015889
URL : https://hal.archives-ouvertes.fr/hal-01405092

R. T. Fielding and R. N. Taylor, Principled design of the modern Web architecture, ACM Transactions on Internet Technology, vol.2, issue.2, pp.115-150, 2002.
DOI : 10.1145/514183.514185

A. Huang, Hacking the Xbox: An Introduction to Reverse Engineering, 2003.

K. Henttonen, M. Matinlassi, E. Niemela, and T. Kanstren, Integrability and Extensibility Evaluation from Software Architectural Models - A Case Study, The Open Software Engineering Journal, vol.1, issue.1, pp.1-20, 2007.
DOI : 10.2174/1874107X00701010001

M. Kelland, From Game Mod to Low-Budget Film: The Evolution of Machinima The Machinima Reader, pp.23-36, 2011.

J. Kücklich, Precarious playbour: Modders and the digital games industry, Fiberculture, 2005.

T. Leveque, J. Estublier, and G. Vega, Extensibility and Modularity for Model- Driven Engineering Environments, 16 th IEEE Conf. On Engineering Computer- Based Systems, pp.305-314, 2009.
DOI : 10.1109/ecbs.2009.16

H. Lowood and M. Nitsche, The Machinima Reader, 2011.
DOI : 10.7551/mitpress/9780262015332.001.0001

P. Marino, 3D Game-Based Filmmaking: The Art of Machinima, 2004.

K. Narayanaswamy and W. Scacchi, Maintaining Evolving Configurations of Large Software Systems, IEEE Trans. Software Engineering, SE, vol.13, issue.3, pp.324-334, 1987.
DOI : 10.1109/tse.1987.233163
URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.79.2267

D. L. Parnas, Designing Software for Ease of Extension and Contraction, IEEE Transactions on Software Engineering, vol.5, issue.2, pp.128-138, 1979.
DOI : 10.1109/TSE.1979.234169

H. Postigo, Of Mods and Modders, Games and Culture, vol.6, issue.4, pp.300-313, 2007.
DOI : 10.1080/1369118032000163277

H. Postigo, Video Game Appropriation through Modifications: Attitudes Concerning Intellectual Property among Modders and Fans, Convergence: The International Journal of Research into New Media Technologies, vol.14, issue.1, pp.59-74, 2008.
DOI : 10.1177/1354856507084419

W. Scacchi, Modeling, Integrating, and Enacting Complex Organizational Processes Simulating Organizations: Computational Models of Institutions and Groups, pp.153-168, 1998.

W. Scacchi, Understanding the requirements for developing open source software systems, IEE Proceedings - Software, vol.149, issue.1, pp.24-39, 2002.
DOI : 10.1049/ip-sen:20020202
URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.117.5406

W. Scacchi, Free and open source development practices in the game community, IEEE Software, vol.21, issue.1, pp.59-67, 2004.
DOI : 10.1109/MS.2004.1259221

W. Scacchi, Free/open source software development, The 6th Joint Meeting on European software engineering conference and the ACM SIGSOFT symposium on the foundations of software engineering companion papers, ESEC-FSE companion '07, pp.459-468, 2007.
DOI : 10.1145/1295014.1295019

W. Scacchi, Game-Based Virtual Worlds as Decentralized Virtual Activity Systems, Online Worlds: Convergence of the Real and the Virtual, pp.225-236, 2010.
DOI : 10.1007/978-1-84882-825-4_18
URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.151.230

O. Sotamaa, When the Game Is Not Enough: Motivations and Practices Among Computer Game Modding Culture, Games and Culture, vol.14, issue.3, pp.239-255, 2010.
DOI : 10.1177/1555412007307955

T. L. Taylor, The Assemblage of Play, Games and Culture, pp.331-339, 2009.

H. Wen, Multi Theft Auto: Hacking Multi-Player Into Grand Theft Auto With Open Source Also see http://www.mtavc, 2005.

N. Yee, The Labor of Fun, Games and Culture, vol.11, issue.1, pp.68-71, 2006.
DOI : 10.1080/07393180216561