@article{SM_1976_28_3_a3,
     author = {B. S. Kashin},
     title = {On a~complete orthonormal system},
     journal = {Sbornik. Mathematics},
     pages = {315--324},
     year = {1976},
     volume = {28},
     number = {3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1976_28_3_a3/}
}