%0 Journal Article %A Rojek, Tadeusz %T The classification problem in Teoplitz $Z_2$-extensions %J Compositio Mathematica %D 1989 %P 341-358 %V 72 %N 3 %I Kluwer Academic Publishers %U http://www.numdam.org/item/CM_1989__72_3_341_0/ %G en %F CM_1989__72_3_341_0