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IRE Transactions on Broadcast Transmission Systems > 1956 > PGBTS-5 > 1 > 32 - 37
Transactions of the American Institute of Electrical Engineers. Part III:... > 1956 > 75 > 3-III > 1381 - 1388
IRE Transactions on Broadcast and Television Receivers > 1955 > BTR-1 > 3 > 9 - 13