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- [7] AN IMPROVED PHASE-SENSITIVE DETECTOR JOURNAL OF SCIENTIFIC INSTRUMENTS, 1965, 42 (07): : 474 - &
- [8] CHARACTERIZATION OF A PHASE-SENSITIVE DETECTOR IEE PROCEEDINGS-G CIRCUITS DEVICES AND SYSTEMS, 1989, 136 (05): : 285 - 292
- [9] NEW HIGH-PERFORMANCE PHASE-SENSITIVE DETECTOR JOURNAL OF PHYSICS E-SCIENTIFIC INSTRUMENTS, 1971, 4 (NDEC): : 941 - +