%0 Book Section %A Langer, Andreas %T On a specialization map in $K_2$-cohomology %B $K$-theory - Strasbourg, 1992 %A Collectif %S Astérisque %D 1994 %P 211-233 %N 226 %I Société mathématique de France %U http://www.numdam.org/item/AST_1994__226__211_0/ %G en %F AST_1994__226__211_0