@article{SM_1975_27_1_a2,
     author = {I. S. Galimov},
     title = {On~the completeness of the exponential system in nonconvex domains},
     journal = {Sbornik. Mathematics},
     pages = {39--50},
     year = {1975},
     volume = {27},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1975_27_1_a2/}
}