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@article{DA_1990_30_a5, author = {K. S. Musabekov}, title = {A necessary condition for optimality in a problem with a phase constraint}, journal = {Diskretnyj analiz i issledovanie operacij}, pages = {46--56}, publisher = {mathdoc}, number = {30}, year = {1990}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DA_1990_30_a5/} }
K. S. Musabekov. A necessary condition for optimality in a problem with a phase constraint. Diskretnyj analiz i issledovanie operacij, no. 30 (1990), pp. 46-56. http://geodesic.mathdoc.fr/item/DA_1990_30_a5/