%0 Journal Article %A A. V. Dmitruk %T Quadratic conditions for a~Pontryagin minimum in an optimum control problem linear in the control.~I: A~decoding theorem %J Izvestiya. Mathematics %D 1987 %P 275-303 %V 28 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_1987_28_2_a2/ %G en %F IM2_1987_28_2_a2