Não informado. (1987). Key abstracts. Institute of Electrical and Electronics Engineers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Key Abstracts. Piscataway, NJ: Institute of Electrical and Electronics Engineers, 1987.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Key Abstracts. Institute of Electrical and Electronics Engineers, 1987.
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