%0 Journal Article %A V. A. Ivnitzkii %T On a Condition of the Invariance of Stationary Probabilities of States for Networks of Sequential Queuing Systems %J Teoriâ veroâtnostej i ee primeneniâ %D 1989 %P 576-580 %V 34 %N 3 %U http://geodesic.mathdoc.fr/item/TVP_1989_34_3_a13/ %G ru %F TVP_1989_34_3_a13