%0 Journal Article %A Florin Gorunescu %A Marina Gorunescu %T Optimization of costs policy in a~geriatric queuing model with extra beds provision %J Sibirskij žurnal vyčislitelʹnoj matematiki %D 2003 %P 139-147 %V 6 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/SJVM_2003_6_2_a3/ %G en %F SJVM_2003_6_2_a3