%0 Journal Article %A E. A. Begovatov %A A. V. Lapin %T Diffusion approximation in closed queueing systems %J Issledovaniya po Prikladnoi Matematike i Informatike %D 1979 %P 95-102 %I mathdoc %U http://geodesic.mathdoc.fr/item/KUIPM_1979_a12/ %G ru %F KUIPM_1979_a12