共 7 条
[3]
Darrington P., 1975, Wireless World, V81, P498
[4]
JOHNSON T, 1975, FINANCIAL TIMES
[5]
*UK BROADC CORP, 1976, BROADC TEL SPEC
[6]
*US SUB COMM COMM, 1976, CABL TEL PROM VERS R
[7]
1976, RAD ELECTRON ENG, V46, P182