* Dept. of Computer Science , Millersville University , Millersville , PA 17551; * Dept. of Computer Science , University of Delaware , Newark , DE 19716; * School of Comp. Science and Software Engrg , Monash University , Clayton , Victoria 3800 Australia; * Dept. of Mathematical Sciences , Univ. of North Carolina at Greensboro , Greensboro , NC 27402
1 paper in the IJCAI proceedings
