%0 Journal Article %A V. A. Il'in %T Problems of localization and convergence for Fourier series in fundamental systems of functions of the Laplace operator %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1968 %P 59-116 %V 23 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1968_23_2_a1/ %G en %F RM_1968_23_2_a1