%0 Journal Article %A V. V. Gorokhovik %T Second order tangent vectors to sets and minimality conditions for points of subsets of ordered normed spaces %J Trudy Instituta matematiki %D 2006 %P 35-47 %V 14 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/TIMB_2006_14_2_a4/ %G ru %F TIMB_2006_14_2_a4