%0 Journal Article %A V. A. Kaimanovich %T The spectral measure of transition operator and harmonic functions, connected with the random walks on discrete groups %J Zapiski Nauchnykh Seminarov POMI %D 1980 %P 102-109 %V 97 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1980_97_a10/ %G ru %F ZNSL_1980_97_a10