@article{IVM_1976_9_a6,
     author = {V. F. Zhuravlev and V. G. Oreshnikov},
     title = {On the determination of the characteristic exponents of an $n$th order linear differential equation with periodic coefficients and a~small parameter},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {64--69},
     publisher = {mathdoc},
     number = {9},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1976_9_a6/}
}