共 6 条
- [1] Castellano R. N., 1975, Proceedings of the 29th Annual Frequency Control Symposium, P128
- [2] COUSSOT G.J., 1974, P 1974 ULTR S, P590
- [3] Guttweln G. K., 1972, U.S. patent, Patent No. 3694677
- [4] Sawamoto K., 1971, P 25 ANN S FREQ CONT, P246
- [6] VOLLUET G, DRME36803195 REP