@article{TIMM_2009_15_4_a11,
     author = {E. K. Kostousova},
     title = {On the boundedness and unboundedness of external polyhedral estimates for reachable sets of linear differential systems},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {134--145},
     publisher = {mathdoc},
     volume = {15},
     number = {4},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2009_15_4_a11/}
}