Short works
  -  Extending the Useful Application Domain for Formal Methods. 1992. (In 6th Z User Workshop )
  
-  Using Formal Specification in the Acquisition of Information Systems: Educating Information Systems Professionals. 1993. (In 7th Z User Workshop )
  
-  Fuzzy Concepts and Formal Methods: A Fuzzy Logic Toolkit for Z. 2000. (In ZB 2000 )