1. Computer Science Department, University of Southwestern Louisiana, Lafayette, LA
2. Department of Computer Science, Winthrop University, Rock Hill, SC
3. Department of Computer Science, University of Texas at Austin, Austin, TX
4. Department of Computer Science, University of Ottawa, Ottawa, Ontario KIN 6N5, Canada
5. Department of Computer Science, Illinois Institute of Twhnology, Chicago, IL
6. Department of Computer Science, Louisiana State University, Baton Rouge, LA