%0 Journal Article %A Blass, Piotr %T Picard groups of Zariski surfaces %J Compositio Mathematica %D 1985 %P 3-36 %V 54 %N 1 %I Martinus Nijhoff Publishers %U http://www.numdam.org/item/CM_1985__54_1_3_0/ %G en %F CM_1985__54_1_3_0