TY - CHAP AU - Langer, Andreas TI - On a specialization map in $K_2$-cohomology BT - $K$-theory - Strasbourg, 1992 AU - Collectif T3 - Astérisque PY - 1994 DA - 1994/// IS - 226 PB - Société mathématique de France UR - http://archive.numdam.org/item/AST_1994__226__211_0/ UR - https://zbmath.org/?q=an%3A0826.19002 UR - https://www.ams.org/mathscinet-getitem?mr=1317121 LA - en ID - AST_1994__226__211_0 ER -