TY - JOUR AU - A. V. Maslov TI - On the question of best possible estimates for Fourier coefficients with respect to orthonormal systems JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1985 SP - 23 EP - 34 IS - 8 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1985_8_a3/ LA - ru ID - IVM_1985_8_a3 ER -