%0 Journal Article %A I. Kopocińska %A B. Kopociński %T Queueing systems with feedback %J Applicationes Mathematicae %D 1971 %P 373-384 %V 12 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/am-12-4-373-384/ %R 10.4064/am-12-4-373-384 %G en %F 10_4064_am_12_4_373_384