共 17 条
- [1] ABRAMOWITZ M, 1965, HDB MATH FUNCTIONS, P363
- [2] BERGMAN L, 1954, ULTRASCHALL ANWENDUN
- [4] COLBERT HM, 1965, THESIS U OREGON
- [7] COOK BD, 1975, ULTRASONIC S P
- [8] COOK BR, UNPUBLISHED
- [9] CRANDALL AJ, 1967, THESIS MICHIGAN STAT
- [10] CRANDALL AR, COMMUNICATION