%0 Journal Article %A A. Ya. Khinchin %T Mathematical methods of the theory of mass service %J Informatics and Automation %D 1955 %P 3-122 %V 49 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_1955_49_a0/ %G ru %F TRSPY_1955_49_a0