共 5 条
- [1] COMPARE HT, 1954, NATURE, V174, P41
- [2] STANDARD FREQUENCY TRANSMISSIONS [J]. PROCEEDINGS OF THE INSTITUTION OF ELECTRICAL ENGINEERS-LONDON, 1954, 101 (72): : 249 - 255
- [3] LAW HB, 1954, 1762 IEE PAP
- [5] PRECISION QUARTZ RESONATOR FREQUENCY STANDARDS [J]. PROCEEDINGS OF THE INSTITUTE OF RADIO ENGINEERS, 1954, 42 (08): : 1300 - 1306