%0 Journal Article %A R. A. Zhukov %A N. O. Kozlova %T On the probability distribution densities of an aggregated random variable for evaluating the functioning of complex systems: a three-dimensional case %J Čebyševskij sbornik %D 2022 %P 255-261 %V 23 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/CHEB_2022_23_3_a19/ %G ru %F CHEB_2022_23_3_a19