@article{DM_1990_2_2_a11,
     author = {V. A. Emelichev and M. M. Kovalev and A. B. Ramazanov},
     title = {The error of gradient extrema of the strongly convex function of a~discrete argument},
     journal = {Diskretnaya Matematika},
     pages = {127--137},
     publisher = {mathdoc},
     volume = {2},
     number = {2},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_1990_2_2_a11/}
}