共 12 条
[1]
ATKINSON FV, 1954, ANN MAT PUR APPL, V0037, P00347
[2]
Coddington E. A., 1955, THEORY ORDINARY DIFF
[3]
Coppel W., 1965, STABILITY ASYMPTOTIC
[6]
HARTMAN P, 1955, AM J MATH, V77, P48
[8]
WASOW W, 1973, SIAM J MATH ANAL, V4, P78