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Transactions of the American Institute of Electrical Engineers > 1950 > 69 > 2 > 855 - 860
Transactions of the American Institute of Electrical Engineers > 1903 > XXI > 417 - 423
Transactions of the American Institute of Electrical Engineers > 1950 > 69 > 2 > 855 - 860
Transactions of the American Institute of Electrical Engineers > 1903 > XXI > 417 - 423