%0 Journal Article %A J.S. MILNE %T Extensions of Abelian Varieties Defined Over a Finite Field. %J Inventiones mathematicae %D 1968 %P 63-84 %V 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1968__5_141905/ %F IM_1968__5_141905