%0 Journal Article %A V. A. Abrashkin %T Explicit formulae for the Hilbert symbol of a~formal group over the Witt vectors %J Izvestiya. Mathematics %D 1997 %P 463-515 %V 61 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_1997_61_3_a0/ %G en %F IM2_1997_61_3_a0