Contains the keyword complexity

Capiluppi A, Izquierdo-Cortázar D. Effort estimation of FLOSS projects: a study of the Linux kernel. Empirical Software Engineering [Internet]. 2011;:1-29. http://www.springerlink.com/content/612r616k8t52m867/fulltext.html
Darcy DP, Daniel SL, Stewart KJ. Exploring Complexity in Open Source Software: Evolutionary Patterns, Antecedents, and Outcomes. In 2010 43rd Hawaii International Conference on System Sciences (HICSS 2010). Honolulu, Hawaii, USA: IEEE; 2010. pp. 1 - 11. PDF icon 10-07-02.pdf (305.27 KB)
Capiluppi A, Boldyreff C, Beecher K, Adams PJ. Quality Factors and Coding Standards - a Comparison Between Open Source Forges. Electronic Notes in Theoretical Computer Science [Internet]. 2009;233:89 - 103. http://www.sciencedirect.com/science/article/B75H1-4VXDKRV-7/2/abcc2be2c4c3998e4bc9b53473ca2d81
den Besten M, Dalle J-M, Galia F. The allocation of collaborative efforts in open-source software. Information Economics and Policy [Internet]. 2008;20:316 - 322. http://www.sciencedirect.com/science/article/B6V8J-4SSG4PN-1/2/88b3824c30a31c18929d8a5ca6d64f62
Herraiz I, Gonzalez-Barahona JM, Robles G. Towards a Theoretical Model for Software Growth. In Fourth International Workshop on Mining Software Repositories (MSR'07:ICSE Workshops 2007). Minneapolis, MN, USA: IEEE; 2007. pp. 21 - 21. PDF icon 28300021.pdf (463.96 KB)
den Besten M, Dalle J-M, Galia F. Collaborative Maintenance in Large Open-Source Projects. In OSS2006: Open Source Systems (IFIP 2.13). Springer; 2006. pp. 233 - 244. PDF icon Collaborative Maintenance (642.17 KB)
Stewart KJ, Darcy DP, Daniel SL. Opportunities and Challenges Applying Functional Data Analysis to the Study of Open Source Software Evolution. Statistical Science [Internet]. Institute of Mathematical Statistics; 2006;21:167-178. http://www.jstor.org/stable/27645747
MacCormack A, Rusnak J, Baldwin C. Exploring the Structure of Complex Software Designs: An Empirical Study of Open Source and Proprietary Code (updated). 2005;. PDF icon maccormackrusnakbaldwin2.pdf (686.42 KB)
Huntley CL. Organizational learning in open-source software projects: an analysis of debugging data. IEEE Transactions on Engineering Management. 2003;50(4):485 - 493.