@article{VSPUI_2019_15_4_a5,
     author = {V. N. Malozemov and G. Sh. Tamasyan},
     title = {On the direction of the steepest descent},
     journal = {Vestnik Sankt-Peterburgskogo universiteta. Prikladna\^a matematika, informatika, processy upravleni\^a},
     pages = {489--501},
     publisher = {mathdoc},
     volume = {15},
     number = {4},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VSPUI_2019_15_4_a5/}
}