共 8 条
- [1] CODDINGTON EA, 1955, THEORY ORDINARY DIFF, pCH17
- [3] LEVINSON N, 1949, ANN MATH, V49, P738
- [5] Ueda Y, 1973, T IECE A, V56A, P218
- [6] UEDA Y, 1979, DEC P ENG F C NEW AP
- [7] Ueda Y., 1978, T I ELECTR ENG JPN A, V98A, P167
- [8] UEDA Y, 1979, DEC P INT C NONL DYN