TY - JOUR AU - M. G. Grigoryan TI - On universal (in the sense of signs) Fourier series with respect to the Walsh system JO - Sbornik. Mathematics PY - 2024 SP - 717 EP - 742 VL - 215 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SM_2024_215_6_a0/ LA - en ID - SM_2024_215_6_a0 ER -