%0 Journal Article %A V. A. Il'in %T On the equiconvergence of expansions in eigenfunctions and in an $N$-fold Fourier integral %J Doklady Akademii Nauk %D 1971 %P 751-754 %V 198 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1971_198_4_a2/ %G ru %F DAN_1971_198_4_a2