%0 Journal Article %A V. L. Beresnev %A A. A. Melnikov %T Computing an upper bound in the two-stage bi-level competitive location model %J Diskretnyj analiz i issledovanie operacij %D 2022 %P 7-23 %V 29 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DA_2022_29_3_a1/ %G ru %F DA_2022_29_3_a1