@article{DE_2006_42_2_a2,
     author = {I. V. Gaishun},
     title = {Stability and strong stability of quasistationary linear {Hamiltonian} systems in total differentials with periodic coefficients},
     journal = {Differencialʹnye uravneni\^a},
     pages = {159--167},
     publisher = {mathdoc},
     volume = {42},
     number = {2},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2006_42_2_a2/}
}