%0 Journal Article %A S. S. Vallander %T Occupation times for countable Markov chains.~IV. Chains on a general tree %J Zapiski Nauchnykh Seminarov POMI %D 1987 %P 39-44 %V 158 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1987_158_a3/ %G ru %F ZNSL_1987_158_a3