Não informado. (1970). Regional Conference Series in Mathematics. American Mathematical Society.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Regional Conference Series in Mathematics. Providence, RI: American Mathematical Society, 1970.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Regional Conference Series in Mathematics. American Mathematical Society, 1970.
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