@article{MZM_2011_89_2_a2,
     author = {A. G. Baskakov and A. A. Vorobjev and M. Yu. Romanova},
     title = {Hyperbolic {Operator} {Semigroups} and {Lyapunov's} {Equation}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {190--203},
     publisher = {mathdoc},
     volume = {89},
     number = {2},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2011_89_2_a2/}
}