%0 Journal Article %A Karl-Otto Stöhr %A Paulo Viana %T A Study of Hasse-Witt Matrices by Local Methods. %J Mathematische Zeitschrift %D 1988 %P 397-408 %V 200 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZ_1988__200_3_174017/ %F MZ_1988__200_3_174017