%0 Journal Article %A Yu. B. Rudyak %T Orientability of bundles: obstruction theory and applications to $K$-theory %J Sbornik. Mathematics %D 1991 %P 429-451 %V 68 %N 2 %U http://geodesic.mathdoc.fr/item/SM_1991_68_2_a6/ %G en %F SM_1991_68_2_a6