%0 Journal Article %A M. F. Sukhinin %T Lower semi-Taylor mappings and sufficient conditions for an extremum %J Sbornik. Mathematics %D 1992 %P 257-271 %V 73 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1992_73_1_a13/ %G en %F SM_1992_73_1_a13