TY - JOUR AU - R. M. Trigub TI - On the comparison principle for Fourier expansions and existence subspaces in the integral metric JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1987 SP - 219 EP - 220 VL - 180 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TM_1987_180_a134/ LA - ru ID - TM_1987_180_a134 ER -