%0 Journal Article %A I. S. Galimov %T On the completeness of the exponential system in nonconvex domains %J Sbornik. Mathematics %D 1975 %P 39-50 %V 27 %N 1 %U http://geodesic.mathdoc.fr/item/SM_1975_27_1_a2/ %G en %F SM_1975_27_1_a2