TY - JOUR A1 - Borndörfer, Ralf A1 - Ferreira, Carlos A1 - Martin, Alexander T1 - Decomposing Matrices into Blocks T2 - SIAM J. Optim. Y1 - 1998 UR - https://opus4.kobv.de/opus4-zib/frontdoor/index/index/docId/2842 UR - http://opus.kobv.de/zib/volltexte/1997/285/ VL - 9 IS - 1 SP - 236 EP - 269 ER -