%0 Journal Article %A E. S. Garai %T On the convergence of workload in a service system to Brownian motion with switching variance %J Zapiski Nauchnykh Seminarov POMI %D 2018 %P 77-89 %V 474 %U http://geodesic.mathdoc.fr/item/ZNSL_2018_474_a4/ %G ru %F ZNSL_2018_474_a4