TY - JOUR AU - L. Z. Fishman TI - Criteria for unsafe and safe boundaries of the domain of stability of systems with delay in the case of a zero root JO - Differencialʹnye uravneniâ PY - 1990 SP - 1830 EP - 1832 VL - 26 IS - 10 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1990_26_10_a26/ LA - ru ID - DE_1990_26_10_a26 ER -