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@article{DE_1977_13_12_a1, author = {D. \`E. Allakhverdiev and N. K. Allachverdieva}, title = {An optimal control problem in {Hilbert} space}, journal = {Differencialʹnye uravneni\^a}, pages = {2124--2134}, publisher = {mathdoc}, volume = {13}, number = {12}, year = {1977}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1977_13_12_a1/} }
D. È. Allakhverdiev; N. K. Allachverdieva. An optimal control problem in Hilbert space. Differencialʹnye uravneniâ, Tome 13 (1977) no. 12, pp. 2124-2134. http://geodesic.mathdoc.fr/item/DE_1977_13_12_a1/