TY - JOUR AU - I. S. Lomov TI - The Il'in spectral method for determination of the properties of the basis property and the uniform convergence of biorthogonal expansions on a finite interval JO - Izvestiya of Saratov University. Mathematics. Mechanics. Informatics PY - 2019 SP - 34 EP - 58 VL - 19 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ISU_2019_19_1_a3/ LA - ru ID - ISU_2019_19_1_a3 ER -