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- [7] FIBEROPTIC CABLES NOT ONLY FOR TELEPHONE ELEKTROTECHNISCHE ZEITSCHRIFT B-AUSGABE, 1978, 30 (25): : 1006 - 1007
- [8] POLYETHYLENE SUBMARINE TELEPHONE CABLES TRANSACTIONS AND JOURNAL OF THE PLASTICS INSTITUTE, 1964, 32 (102): : J118 - &
- [9] ALUMINIUM CONDUCTORS FOR TELEPHONE CABLES POST OFFICE ELECTRICAL ENGINEERS JOURNAL, 1966, 59 : 106 - &
- [10] PERSPECTIVE ON TELEPHONE CABLES IN JAPAN JAPAN TELECOMMUNICATIONS REVIEW, 1978, 20 (01): : 21 - 33