%0 Journal Article %A A. I. Vagabov %T On the equiconvergence of expansions in a trigonometric Fourier series and in the principal functions of ordinary differential operators %J Doklady Akademii Nauk %D 1980 %P 1294-1297 %V 254 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1980_254_6_a2/ %G ru %F DAN_1980_254_6_a2