TY - JOUR AU - V. G. Korneev AU - Ya. Fish TI - Two-level methods, based on aggregation, for solving three-dimensional problems JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 2000 SP - 42 EP - 61 IS - 11 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_2000_11_a4/ LA - ru ID - IVM_2000_11_a4 ER -