%0 Journal Article %A A. V. Arutyunov %A S. M. Aseev %T The maximum principle in optimal control problems with phase constraints. Nondegeneracy and stability %J Doklady Akademii Nauk %D 1994 %P 134-137 %V 334 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1994_334_2_a1/ %G ru %F DAN_1994_334_2_a1