@article{DE_1990_26_10_a26,
     author = {L. Z. Fishman},
     title = {Criteria for unsafe and safe boundaries of the domain of stability of systems with delay in the case of a zero root},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1830--1832},
     publisher = {mathdoc},
     volume = {26},
     number = {10},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1990_26_10_a26/}
}