TY - JOUR TI - Department of Computer Science AU - Hylke Buisman AU - Manuel Gomez-rodriguez AU - Saeed Hassanpour PY - 1993 JO - Journal of Computational and Applied Mathematics DO - 10.1016/0377-0427(93)90083-n UR - https://doi.org/10.1016/0377-0427(93)90083-n ER -