Não informado. (1971). Journal of the Operations Research Society of Japan. Operations Research Society of Japan.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Journal of the Operations Research Society of Japan. Tokyo: Operations Research Society of Japan, 1971.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Journal of the Operations Research Society of Japan. Operations Research Society of Japan, 1971.
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