@article{IZKAB_2016_4_a2,
     author = {V. Ch. Kudaev},
     title = {Ranks of extrema and structural optimization},
     journal = {News of the Kabardin-Balkar scientific center of RAS},
     pages = {15--24},
     year = {2016},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IZKAB_2016_4_a2/}
}