%0 Journal Article %A A. N. Varchenko %T Local classification of volume forms in the presence of a hypersurface %J Funkcionalʹnyj analiz i ego priloženiâ %D 1985 %P 23-31 %V 19 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/FAA_1985_19_4_a2/ %G ru %F FAA_1985_19_4_a2