@article{DAN_1980_254_6_a2,
     author = {A. I. Vagabov},
     title = {On the equiconvergence of expansions in a trigonometric {Fourier} series and in the principal functions of ordinary differential operators},
     journal = {Doklady Akademii Nauk},
     pages = {1294--1297},
     publisher = {mathdoc},
     volume = {254},
     number = {6},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1980_254_6_a2/}
}