%0 Journal Article %A N. V. Ivanov %T The second bounded cohomology group %J Zapiski Nauchnykh Seminarov POMI %D 1988 %P 117-120 %V 167 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1988_167_a7/ %G ru %F ZNSL_1988_167_a7