TY - JOUR AU - V. Sh. Tsagareishvili TI - Functional conditions for the convergence of Fourier series with respect to general orthonormal systems JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 2011 SP - 68 EP - 74 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_2011_5_a8/ LA - ru ID - IVM_2011_5_a8 ER -