1. Analysis of maintenance work categories through measurement;Abran,1991
2. Using components to increase maintainability in a large telecommunication system;Algestam,2002
3. Understanding and predicting the process of software maintenance releases;Basili,1996
4. A staged model for the software life cycle;Rajlich;IEEE Computer,2000
5. Modeling software maintenance requests: a case study;Burch,1997