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- [3] HIGH-SPEED PLL AND FREQUENCY-SYNTHESIZER FOR LOW-FREQUENCIES IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS, 1984, 31 (10): : 847 - 852
- [5] AUTOMATIC DIGITAL FREQUENCY METER FOR LOW FREQUENCIES MEASUREMENT TECHNIQUES-USSR, 1966, (09): : 1192 - &
- [10] MEASURING LOW-FREQUENCIES USING A FREQUENCY-MULTIPLIER ELECTRONICS WORLD & WIRELESS WORLD, 1995, (1715): : 868 - 868