共 7 条
[1]
ATKINSON FV, 1955, PAC J MATH, V5, P643
[2]
Bellman R., 1953, STABILITY THEORY DIF
[4]
La Salle J., 1961, STABILITY LIAPUNOVS
[5]
WONG JSW, 1965, MONATSH MATH, V69, P364
[6]
[No title captured]
[7]
[No title captured]