%0 Journal Article %A Blass, Piotr %A Lang, Jeffrey %T Appendix : “Picard groups of Zariski surfaces” %J Compositio Mathematica %D 1985 %P 37-40 %V 54 %N 1 %I Martinus Nijhoff Publishers %U http://archive.numdam.org/item/CM_1985__54_1_37_0/ %G en %F CM_1985__54_1_37_0