TY - JOUR AU - I. I. Sharapudinov TI - Sobolev-orthogonal systems of functions associated with an orthogonal system JO - Izvestiya. Mathematics PY - 2018 SP - 212 EP - 244 VL - 82 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IM2_2018_82_1_a7/ LA - en ID - IM2_2018_82_1_a7 ER -