@article{SM_1992_73_1_a13,
     author = {M. F. Sukhinin},
     title = {Lower {semi-Taylor} mappings and sufficient conditions for an extremum},
     journal = {Sbornik. Mathematics},
     pages = {257--271},
     publisher = {mathdoc},
     volume = {73},
     number = {1},
     year = {1992},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1992_73_1_a13/}
}