1. 2001. Motivators and De-Motivators in software process improvement: an empirical study. PhD, University of Hertfordshire, Hertfordshire, UK.
2. Motivators of Software Process Improvement: an analysis of practitioners' views
3. De-motivators for software process improvement: an analysis of practitioners’ views
4. , . 2000. Implementing a people focused SPI programme. 11th European Software Control And Metrics Conference and The Third SCOPE Conference on Software Product Quality.
5. , , . 2002. Lessons learned from 25 years of process improvement: The rise and fall of the NASA software engineering laboratory. International Conference on Software Engineering. 69–79.