Não informado. (1980). Abstracts of Papers Presented to the American Mathematical Society. American Mathematical Society.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Abstracts of Papers Presented to the American Mathematical Society. Providence, RI: American Mathematical Society, 1980.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Abstracts of Papers Presented to the American Mathematical Society. American Mathematical Society, 1980.
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