%0 Journal Article %A V. I. Arnol'd %T Characteristic class entering in quantization conditions %J Funkcionalʹnyj analiz i ego priloženiâ %D 1967 %P 1-14 %V 1 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/FAA_1967_1_1_a0/ %G ru %F FAA_1967_1_1_a0