%0 Journal Article %A Sh. A. Alimov %A V. A. Il'in %A E. M. Nikishin %T Convergence problems of multiple trigonometric series and spectral decompositions.~I %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1976 %P 29-86 %V 31 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1976_31_6_a3/ %G en %F RM_1976_31_6_a3