James W. Demmel <demmel @ cs . berkeley . edu> (email mangled to prevent spamming)
Computer Science Division and Mathematics Department University of California at Berkeley Berkeley, CA 94720 USA
Michael T. Heath <heath @ ncsa . uiuc . edu> (email mangled to prevent spamming)
Department of Computer Science and National Center for Supercomputing Applications University of Illinois Urbana, IL 61801 USA
Henk A. van der Vorst <vorst @ math . ruu . nl> (email mangled to prevent spamming)
Mathematical Institute,Utrecht University Utrecht The Netherlands