TY - JOUR AU - Duff, Iain S. AU - Kaya, Kamer TI - Preconditioners based on strong subgraphs JO - Electronic transactions on numerical analysis PY - 2013 SP - 225 EP - 248 VL - 40 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ETNA_2013__40__a14/ LA - en ID - ETNA_2013__40__a14 ER -