%0 Journal Article %A A. V. Plyasunov %T A~polynomially solvable class of two-level nonlinear programming problems %J Diskretnyj analiz i issledovanie operacij %D 2000 %P 89-113 %V 7 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DA_2000_7_2_a8/ %G ru %F DA_2000_7_2_a8