Não informado. (1964). International Journal of Computer Mathematics. Gordon and Breach Science Publishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. International Journal of Computer Mathematics. London: Gordon and Breach Science Publishers, 1964.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. International Journal of Computer Mathematics. Gordon and Breach Science Publishers, 1964.
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