TY - JOUR AU - A. Yu. Yeremin AU - A. A. Nikishin TI - Factorized-sparse-approximate-inverse preconditionings of linear systems with unsymmetric matrices JO - Zapiski Nauchnykh Seminarov POMI PY - 2002 SP - 18 EP - 35 VL - 284 UR - http://geodesic.mathdoc.fr/item/ZNSL_2002_284_a1/ LA - ru ID - ZNSL_2002_284_a1 ER -