@article{DAN_1987_297_4_a5,
     author = {M. J. Mardanov},
     title = {Legendre necessary conditions in optimization problems with delays},
     journal = {Doklady Akademii Nauk},
     pages = {795--797},
     publisher = {mathdoc},
     volume = {297},
     number = {4},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1987_297_4_a5/}
}