%0 Journal Article %A G. I. Kalmykov %T Expansion of the correlation functions of the grand canonical ensemble in powers of the activity %J Teoretičeskaâ i matematičeskaâ fizika %D 1994 %P 94-109 %V 101 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_1994_101_1_a8/ %G ru %F TMF_1994_101_1_a8