%0 Journal Article %A M. V. Bondarko %T Isogeny classes of formal groups over complete discrete valuation fields with an arbitrary residue field %J Algebra i analiz %D 2005 %P 105-124 %V 17 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/AA_2005_17_6_a1/ %G ru %F AA_2005_17_6_a1