https://research.ibm.com/publications/return-on-contribution-roc-a-metric-for-enterprise-social-software
Return on Contribution (ROC): A metric for enterprise social software for ECSCW 2009 - IBM Research
Return on Contribution (ROC): A metric for enterprise social software for ECSCW 2009 by Michael J. Muller et al.
https://publica.fraunhofer.de/entities/mainwork/554299e4-32df-405b-a2b4-83a084aa81c0
ECSCW'95 Workshop on the Role of Version Control in CSCW Applications. Proceedings