TY - JOUR AU - Elias A. Lipitakis AU - George A. Gravvanis TI - The numerical solution of large finite element systems by explicit preconditioning semi-direct methods JO - Μαθηματική Επιθεώρηση PY - 1987 SP - 63 EP - 82 VL - 32 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MR_1987__32_a10/ LA - gr ID - MR_1987__32_a10 ER -