@inproceedings{publication-174, author={Bachmann, A and Bernstein, A}, booktitle={IWPSE-Evol'09: Proceedings of the joint international and annual ERCIM workshops on Principles of software evolution (IWPSE) and software evolution (Evol) workshops}, doi={10.1145/1595808.1595830}, month={AUG}, pages={119-128}, title={Software process data quality and characteristics - a historical view on open and closed source projects}, year=2009, }