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- [4] TRANSMISSION PROPERTIES OF PAPER-INSULATED TWIN CABLES AT HIGH-FREQUENCIES ERICSSON REVIEW, 1977, 54 (01): : 28 - 31
- [5] TRANSMISSION OF VIDEO SIGNALS USING TWO CARRIER FREQUENCIES. Telecommunications and Radio Engineering (English translation of Elektrosvyaz and Radiotekhnika), 1978, 32-33 (12): : 117 - 119
- [6] AMERICAN NATIONAL STANDARD FOR POLYOLEFIN-INSULATED THERMOPLASTIC-JACKETED COMMUNICATION CABLES. American National Standards Institute, Standards, 1600,