@article{DE_1997_33_4_a6,
     author = {A. G. Ivanov},
     title = {On the optimal control of almost periodic motions under equality and inequality constraints on the means. {III}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {478--485},
     publisher = {mathdoc},
     volume = {33},
     number = {4},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1997_33_4_a6/}
}