%0 Journal Article %A V. I. Bakhtin %T A conditional extremum necessary condition in terms of local algebras %J Trudy Instituta matematiki %D 2011 %P 3-6 %V 19 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/TIMB_2011_19_2_a0/ %G ru %F TIMB_2011_19_2_a0