Numaguchi, Yasutaka (December 1979). "Present Status of Multichannel-Sound Television Broadcasting in Japan". IEEE Transactions on Broadcasting. BC-25 (4): 128–136. doi:10.1109/TBC.1979.266340. S2CID19830970.
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Numaguchi, Yasutaka (December 1979). "Present Status of Multichannel-Sound Television Broadcasting in Japan". IEEE Transactions on Broadcasting. BC-25 (4): 128–136. doi:10.1109/TBC.1979.266340. S2CID19830970.