@article{DE_1989_25_12_a2,
     author = {A. V. Arutyunov and M. D. Mardanov},
     title = {On the theory of the maximum principle in problems with delays},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2048--2058},
     publisher = {mathdoc},
     volume = {25},
     number = {12},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1989_25_12_a2/}
}