TY - JOUR AU - M. Yu. Kokurin AU - N. A. Yusupova TI - On necessary conditions for the qualified convergence of methods for solving linear ill-posed problems JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 2001 SP - 39 EP - 47 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_2001_2_a4/ LA - ru ID - IVM_2001_2_a4 ER -