%0 Journal Article %A A. M. Tsirlin %T Methods of Simplifying Optimal Control Problems, %J Russian journal of nonlinear dynamics %D 2023 %P 35-48 %V 19 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/ND_2023_19_1_a2/ %G en %F ND_2023_19_1_a2