@article{SM_1989_63_1_a5,
     author = {B. V. Vinnitskii},
     title = {On a description of bases of generalized systems of exponentials},
     journal = {Sbornik. Mathematics},
     pages = {59--80},
     year = {1989},
     volume = {63},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1989_63_1_a5/}
}