1. April, A., Abran, A., Dumke, R.R.: Software maintenance productivity measurement: how to assess the readiness of your organization. In: Proceedings of the International Conference on Software Process and Product Measurement (IWSM/Metrikon 2004), pp. 1–12 (2004)
2. Alam, O., Adams, B., Hassan, A.E.: Measuring the progress of projects using the time dependence of code changes. In: Proceedings of the IEEE International Conference on Software Maintenance (ICSM 2009), pp. 329–338 (2009)
3. Chan, T.: Beyond productivity in software maintenance: Factors affecting lead time in servicing users’ requests. In: Proceedings of the IEEE International Conference on Software Maintenance (ICSM 2000), pp. 228–235 (2000)
4. Damm, L.-O., Lundberg, L., Wohlin, C.: Faults-slip-through - a concept for measuring the efficiency of the test process. Software Process: Improvement and Practice 11(1), 47–59 (2006)
5. Henry, J., Blasewitz, R., Kettinger, D.: Defining and implementing a measurement-based software process. Software Maintenance: Research and Practice 8, 79–100 (1996)