Não informado. (1969). Current Papers in Electrical and Electronics Engineering. Institution of Electrical Engineers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Current Papers in Electrical and Electronics Engineering. London: Institution of Electrical Engineers, 1969.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Current Papers in Electrical and Electronics Engineering. Institution of Electrical Engineers, 1969.
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