Não informado. (1987). Key abstracts. Institute of Electrical and Electronics Engineers.
Chicago-referens (17:e uppl.)Não informado. Key Abstracts. Piscataway, NJ: Institute of Electrical and Electronics Engineers, 1987.
MLA-referens (8:e uppl.)Não informado. Key Abstracts. Institute of Electrical and Electronics Engineers, 1987.
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