共 50 条
- [1] SYNCHRONOUS DETECTOR OF LOW-FREQUENCY SIGNALS. Instruments and Experimental Techniques (English Translation of Pribory I Tekhnika Eksperimenta), 1979, 22 (2 pt 2): : 476 - 478
- [2] LOW-FREQUENCY PHOTOPLETHYSMOGRAPH SIGNALS CLINICAL PHYSICS AND PHYSIOLOGICAL MEASUREMENT, 1989, 10 (04): : 365 - 367
- [5] INSTANTANEOUS RATEMETER FOR LOW-FREQUENCY SIGNALS ELECTRONIC ENGINEERING, 1978, 50 (601): : 27 - 27
- [6] SIGN CORRELATOR FOR LOW-FREQUENCY SIGNALS INSTRUMENTS AND EXPERIMENTAL TECHNIQUES-USSR, 1968, (05): : 1141 - &
- [7] MEASUREMENT OF WEAK LOW-FREQUENCY SIGNALS INSTRUMENTS AND EXPERIMENTAL TECHNIQUES-USSR, 1969, (05): : 1204 - &
- [8] OPTICAL PROCESSING OF LOW-FREQUENCY SIGNALS RADIOTEKHNIKA I ELEKTRONIKA, 1976, 21 (10): : 2224 - 2226