Contains the keyword productivity

Adams PJ, Capiluppi A. Bridging the Gap between Agile and Free Software Approaches. International Journal of Open Source Software and Processes. 2009;1(1):58-71. Abstract
Kidane Y, Gloor P. Correlating temporal communication patterns of the Eclipse open source community with performance and creativity. Computational & Mathematical Organization Theory. 2007;13:17-27. Abstract
Colazo JA, Fang Y, Neufeld DJ. Development Success in Open Source Software Projects: Exploring the Impact of Copylefted Licenses.; 2005. Abstract
Koch S. Profiling an Open Source Project Ecology and Its Programmers. Electronic Markets. 2004;14(2):77-88. Abstract
Mockus A, Fielding R, Herbsleb JD. Two case studies of open source software development: Apache and Mozilla. ACM Transactions on Software Engineering and Methodology. 2002;11:309-46. Abstract  Download: mockusFieldingHerbsleb2002.pdf (365.14 KB)
Mockus A, Fielding R, Herbsleb J. A Case Study of Open Source Software Development: The Apache Server. Proceedings of the International Conference on Software Engineering (ICSE 2000). 2000. Abstract  Download: mockusapache.pdf (252.28 KB)