共 13 条
[3]
Kato T., 1966, PERTURBATION THEORY, V132, P396
[4]
Loudon R., 1959, AM J PHYS, V27, P649, DOI DOI 10.1119/1.1934950
[6]
Reed M, 1972, METHODS MODERN MATH, VI
[8]
Simon, 1975, METHODS MODERN MATH
[10]
VANHAERINGEN, 1978, J MATH PHYS, V19, P2165