@article{IVM_1988_9_a3,
     author = {Yu. F. Dolgiǐ},
     title = {Properties of the monodromy operator of a~periodic system of differential equations of neutral type with deviating argument},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {23--29},
     year = {1988},
     number = {9},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1988_9_a3/}
}