%0 Journal Article %A N. M. Bogolyubov %T $XX0$ Heisenberg chain and random walks %J Zapiski Nauchnykh Seminarov POMI %D 2005 %P 13-27 %V 325 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_2005_325_a1/ %G ru %F ZNSL_2005_325_a1