@article{TIMM_2007_13_2_a5,
     author = {Yu. F. Dolgii and E. V. Ul'yanov},
     title = {Singular numbers of the monodromy operator and sufficient conditions of the asymptotic stability of periodic system of differential equations with fixed delay},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {66--79},
     year = {2007},
     volume = {13},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2007_13_2_a5/}
}