共 22 条
- [1] Albrecht E., 1984, OPERATOR THEORY ADV, V14, P13
- [4] CURTO RE, 1978, THESIS STATE U NEW Y
- [5] FAINSTEIN AS, 1980, IZV AN AZERB SSR, P3
- [6] FOLLAND GB, 1972, NEUMANN PROBLEM CAUC
- [7] Henkin GM, 1971, USP MAT NAUK, V26, P211
- [8] Kato T., 1976, PERTURBATION THEORY
- [10] LIEB I, 1970, NACHR AKAD WISS G MP, V2, P1