@article{DAN_1977_235_2_a5,
     author = {G. A. Kamenskii},
     title = {The conditional extremum of a functional with deviating argument},
     journal = {Doklady Akademii Nauk},
     pages = {266--268},
     publisher = {mathdoc},
     volume = {235},
     number = {2},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1977_235_2_a5/}
}