@article{DE_1995_31_10_a9,
     author = {A. M. Sedletskii},
     title = {Approximation properties of systems of exponentials in $L^p(a,b)$},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1675--1681},
     publisher = {mathdoc},
     volume = {31},
     number = {10},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1995_31_10_a9/}
}