A collaboration with Nicolas Jullien, Kevin Crowston and Felipe Ortega. We're extending[1] with measures from the Measuring value-added project.
Jullien, N., Crowston, K., & Ortega, F. (2015, August). The rise and fall of an online project: is bureaucracy killing efficiency in open knowledge production?. In Proceedings of the 11th International Symposium on Open Collaboration (p. 13). ACM. PDF