@article{IVM_1999_2_a6,
     author = {E. K. Makarov and S. N. Popova},
     title = {On the global controllability of central exponents of linear systems.},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {60--67},
     publisher = {mathdoc},
     number = {2},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1999_2_a6/}
}