@article{IIMI_2006_3_a69,
     author = {E. V. Ul'yanov},
     title = {The use of the singular numbers of the monodromy operator in the problem of stability of the periodic system with constant delay},
     journal = {Izvestiya Instituta Matematiki i Informatiki Udmurtskogo Gosudarstvennogo Universiteta},
     pages = {151--152},
     year = {2006},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IIMI_2006_3_a69/}
}