共 17 条
[5]
DACOSTA RCT, 1983, LETT NUOVO CIMENTO, V36, P393, DOI 10.1007/BF02906835
[6]
EXNER P, UNPUB
[8]
Kato T., 2013, PERTURBATION THEORY, V132
[9]
Koppe H., 1971, SITZ BER HEIDELBERGE, P127