%0 Journal Article %A N. A. Panchenko %A A. K. Bogushov %T Integral method for determining the key value item group %J Journal of computational and engineering mathematics %D 2020 %P 50-57 %V 7 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/JCEM_2020_7_2_a4/ %G en %F JCEM_2020_7_2_a4