%0 Journal Article %A Osmolovskii, Nikolai P. %T Second order conditions in optimal control problems with mixed equality-type constraints on a variable time interval %J Control and Cybernetics %D 2009 %P 1535-1556 %V 38 %N 4B %I mathdoc %U http://geodesic.mathdoc.fr/item/CC_2009_38_4B_a13/ %G en %F CC_2009_38_4B_a13