@article{DE_2000_36_2_a12,
     author = {A. Z. Ishmukhametov},
     title = {Controllability of hyperbolic systems under singular perturbations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {241--250},
     publisher = {mathdoc},
     volume = {36},
     number = {2},
     year = {2000},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2000_36_2_a12/}
}