Affiliation: | (1) IBM Almaden Research Center, 650 Harry Road, San Jose, CA, 95120-6099, U.S.A.;(2) Department of Computer Science, Cornell University, 4144 Upson Hall, Ithaca, NY, 14853, U.S.A.;(3) Department of Applied Mathematics and Computer Science, Weizmann Institute of Science, 76100 Rehovot, Israel;(4) Department of Computer Science, Rice University, 6100 S. Main Street, Houston, TX, 77005-1892, U.S.A. |