1. The job of software maintenance. Proceedings Conference on Software Maintenance-1987. IEEE Computer Society Press: Los Alamitos CA, 1987; 4-12.
2. Software maintenance notes
3. Towards an ontology of software maintenance
4. Management. Harper & Row, Publishers: New York NY, 1974; 464-516.
5. ICSM. Empirical studies and management sessions. Proceedings International Conference on Software Maintenance. IEEE Computer Society Press: Los Alamitos CA, 2000; 117-276.