@article{IIMI_2016_1_a2,
     author = {L. I. Rodina and A. H. Hammady},
     title = {Characteristics of invariancy for the attainability set of a control system},
     journal = {Izvestiya Instituta Matematiki i Informatiki Udmurtskogo Gosudarstvennogo Universiteta},
     pages = {44--53},
     year = {2016},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IIMI_2016_1_a2/}
}