1. Cooperative Database Systems (CoBase)
2. Knowledge-Based Image Retrieval with Spatial and Temporal Constructs at the Tenth International Symposium on Methodologies for Intelligent Systems (ISMIS'97), North Carolina, 1997.
3. A Knowledge-based Approach to Retrieve Scenario Specific Free-text in a Medical Digital Library, UCLA Computer Science Research Review, 2003
4. Knowledge-based Information Management for Biomedical Applications, at the 5th IFAC Symposium on Modeling and Control in Biomedical Systems, Melbourne, Australia, August 2003
5. A Knowledge-based Medical Digital Library, at the 15th International Conference on Software Engineering and Data Engineering, SEDE, Los Angeles, California, July 2006