Contains the keyword productivity

Vasilescu B, Blincoe K, Xuan Q, Casalnuovo C, Damian D, Devanbu P, et al.. The Sky is Not the Limit: Multitasking Across GitHub Projects. In Proceedings of the 38th International Conference on Software Engineering (ICSE 2016) [Internet]. New York, NY, USA: ACM; 2016. pp. 994–1005. http://doi.acm.org/10.1145/2884781.2884875
Sethanandha BD. Improving open source software patch contribution process: methods and tools. In Proceedings of the 33rd International Conference on Software Engineering [Internet]. New York, NY, USA: ACM; 2011. pp. 1134–1135. http://doi.acm.org/10.1145/1985793.1986018
Singh PV. The small-world effect: The influence of macro-level properties of developer collaboration networks on open-source project success. ACM Trans. Softw. Eng. Methodol. [Internet]. New York, NY, USA: ACM; 2010;20:6:1–6:27. http://doi.acm.org/10.1145/1824760.1824763
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.
Kidane Y, Gloor P. Correlating temporal communication patterns of the Eclipse open source community with performance and creativity. Computational & Mathematical Organization Theory [Internet]. Springer Netherlands; 2007;13:17-27. http://dx.doi.org/10.1007/s10588-006-9006-3PDF icon correlating.pdf (423.3 KB)
Colazo JA, Fang Y, Neufeld DJ. Development Success in Open Source Software Projects: Exploring the Impact of Copylefted Licenses [Internet]. Americas Conference on Information Systems (AMCIS 2005). 2005. http://aisel.isworld.org/password.asp?Vpath=AMCIS/2005&\#38;PDFpath=OSSDAU01-1167.pdf
Koch S. Profiling an Open Source Project Ecology and Its Programmers. Electronic Markets. 2004;14(2):77 - 88.
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;11:309-346. PDF icon 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;. PDF icon mockusapache.pdf (252.28 KB)