TY - JOUR AU - T. B. Kopeikina TI - The identifiability of linear nonstationary systems JO - Differencialʹnye uravneniâ PY - 1972 SP - 1507 EP - 1510 VL - 8 IS - 8 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1972_8_8_a23/ LA - ru ID - DE_1972_8_8_a23 ER -