共 18 条
[1]
Coddington E. A., 1955, THEORY ORDINARY DIFF
[2]
Dunford N., 1963, LINEAR OPERATORS PAR
[3]
FULTON C, 1973, THESIS RHEINISCH WES
[4]
Hartman P., 2010, CLASSICS APPL MATH, V38
[5]
HILLE E, 1969, LECTURES ORDINARY DI
[6]
JORGENS K, 1962, SPECTRAL THEORY 2 OR
[8]
NAIMARK MA, 1954, LINEARE DIFFERENTIAL
[9]
Rellich F., 1951, MATH ANN, V122, P343
[10]
RELLICH F, 1951, SPECTRAL THEORY 2 OR