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- [3] NEW EQUIPMENT FOR RADIO TELEPHONY LINKS .1. RADIO-RELAY EQUIPMENT SYSTEMS TECHNOLOGY, 1978, (28): : 25 - 30
- [5] NEW MICROWAVE RADIO-RELAY EQUIPMENT FOR TELEPHONY AND TELEVISION TRANSMISSION GEC-JOURNAL OF SCIENCE & TECHNOLOGY, 1975, 42 (03): : 116 - 125