@article{TIMM_1992_1_a11,
     author = {N. N. Subbotina},
     title = {Unified optimality conditions in control problems},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {147--159},
     publisher = {mathdoc},
     volume = {1},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_1992_1_a11/}
}