%0 Journal Article %A Yu. F. Korobeinik %T Representing systems of exponentials and nontrivial decompositions %J Doklady Akademii Nauk %D 1980 %P 528-531 %V 252 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1980_252_3_a2/ %G ru %F DAN_1980_252_3_a2