%0 Journal Article %A R. S. Ismagilov %T Unitary representations of the group of diffeomorphisms of a circle %J Funkcionalʹnyj analiz i ego priloženiâ %D 1971 %P 45-53 %V 5 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/FAA_1971_5_3_a7/ %G ru %F FAA_1971_5_3_a7