%0 Journal Article %A P. M. Akhmet'ev %T $K_2$ for the simplest integral group rings and topological applications %J Sbornik. Mathematics %D 2003 %P 21-29 %V 194 %N 1 %U http://geodesic.mathdoc.fr/item/SM_2003_194_1_a1/ %G en %F SM_2003_194_1_a1