%0 Journal Article %A Elvira Laura Livorni %T Classification of algebraic surfaces with sectional genus less than or equal to six. III: Ruled surfaces with dim...(X)=2. %J Mathematica Scandinavica %D 1986 %P 9-29 %V 59 %I mathdoc %U http://geodesic.mathdoc.fr/item/MS2_1986__59_166987/ %F MS2_1986__59_166987