%0 Journal Article %A William Pardon %T Mod 2 Semi-characteristics and the Converse to a Theorem of Milnor. %J Mathematische Zeitschrift %D 1980 %P 247-268 %V 171 %U http://geodesic.mathdoc.fr/item/MZ_1980__171_172937/ %F MZ_1980__171_172937