@article{DE_2002_38_11_a0,
     author = {A. V. Arutyunov and Yu. S. Vereshchagina},
     title = {On {Necessary} {Second-Order} {Conditions} in {Optimal} {Control} {Problems}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1443--1450},
     publisher = {mathdoc},
     volume = {38},
     number = {11},
     year = {2002},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2002_38_11_a0/}
}