共 50 条
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- [48] PERTURBATION-THEORY FOR EXCITED-STATES OF MOLECULES .3. THEORETICA CHIMICA ACTA, 1972, 26 (03): : 267 - &
- [49] NON-HERMITIAN HAMILTONIANS, DECAYING STATES, AND PERTURBATION-THEORY PHYSICAL REVIEW C, 1972, 6 (01): : 114 - +