共 19 条
[1]
Apostol C., 1976, REV ROUM MATH PURES, V21, P155
[2]
ATKINSON FV, 1951, MAT SBORNIK, V28, P3
[3]
Brown L. G., 1973, LECT NOTES MATH, V345, P58
[4]
CORDES HO, 1963, J MATH MECH, V12, P693
[5]
de la Harpe P., 1978, LECT NOTES MATH, V725, P180
[7]
GOLDBERG S, 1966, UNBOUNDED LINEAR OPE
[8]
KATO T, 1966, PERTURBATIONS THEORY
[9]
Krein M., 1952, MAT SBORNIK, V30, P219
[10]
Krein M. G., 1947, USPEHI MATEM NAUK, V2, P60