%0 Journal Article %A V. M. Buchstaber %T Two-valued formal groups. Algebraic theory and applications to cobor\-dism.~I %J Izvestiya. Mathematics %D 1975 %P 987-1006 %V 9 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_1975_9_5_a3/ %G en %F IM2_1975_9_5_a3