共 12 条
[5]
HALANAY A, 1962, PROBL AUTOM, V5, P103
[6]
HALANAY A, 1968, QUALITATIVE THEORY P, P36
[7]
IONESCU V, 1976, REV ROUM SCI TECH EE, V21, P465
[8]
Kalman RE., 1963, CONTRIB DIFFER EQU, V1, P189