%0 Journal Article %A S. Ya. Serovaǐskiǐ %T Optimal Control of Singular Stationary Systems with Phase Constraints and State Variation %J Matematičeskie zametki %D 2015 %P 761-766 %V 97 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_2015_97_5_a9/ %G ru %F MZM_2015_97_5_a9