@article{VSPUI_2023_19_2_a12,
     author = {E. A. Kalinina and A. M. Kamachkin and N. A. Stepenko and G. Sh. Tamasyan},
     title = {On the question of a constructive controllability criterion. {Pt~I.} {Cyclic} invariant subspaces},
     journal = {Vestnik Sankt-Peterburgskogo universiteta. Prikladna\^a matematika, informatika, processy upravleni\^a},
     pages = {283--299},
     publisher = {mathdoc},
     volume = {19},
     number = {2},
     year = {2023},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VSPUI_2023_19_2_a12/}
}