@article{MZM_1999_66_5_a5,
     author = {G. A. Kurina and G. V. Martynenko},
     title = {On the reducibility of a~nonnegatively {Hamiltonian} real periodic matrix to block-diagonal form},
     journal = {Matemati\v{c}eskie zametki},
     pages = {688--695},
     publisher = {mathdoc},
     volume = {66},
     number = {5},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1999_66_5_a5/}
}