%0 Journal Article %A Yu. M. Vorob'ev %A S. Yu. Dobrokhotov %T Completeness of the system of eigenfunctions of a nonelliptic operator on the torus, generated by a Hill operator with a finite-zone potential %J Funkcionalʹnyj analiz i ego priloženiâ %D 1988 %P 65-66 %V 22 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/FAA_1988_22_2_a9/ %G ru %F FAA_1988_22_2_a9