TY - JOUR AU - M. V. Bushmanova TI - Finite-dimensional approximations to the solution of a~linear operator equation of the first kind JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1977 SP - 11 EP - 17 IS - 9 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1977_9_a2/ LA - ru ID - IVM_1977_9_a2 ER -