%0 Journal Article %A M. Andreatta %A E. Ballico %T On the adjunction process over a surface in char p. %J Manuscripta mathematica %D 1988 %P 227-244 %V 62 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/MM2_1988__62_3_155343/ %F MM2_1988__62_3_155343