TY - BOOK AU - Axelsson,O. AU - M. Neytcheva AU - B. Polman TI - The bordering method as a preconditioning method T2 - Report 9348 AV - MATH QA3.R46 no.9348 PY - 1993/// CY - Nijmegen PB - Department of Mathematics Catholic University KW - Bordering methods KW - Preconditioning KW - Conjugate gradient N1 - Includes bibliographical references ER -