@article{DE_1977_13_12_a18,
     author = {B. M. Usifov and \'E. M. Dzhafarov},
     title = {Optimal control of processes that are described by integro-differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2276--2279},
     publisher = {mathdoc},
     volume = {13},
     number = {12},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1977_13_12_a18/}
}