@article{ZVMMF_1998_38_9_a6,
     author = {T. K. Melikov},
     title = {An analogue of the {Kelley} condition for optimal systems with aftereffect of neutral type},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {1490--1499},
     year = {1998},
     volume = {38},
     number = {9},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1998_38_9_a6/}
}