Não informado. (1975). Houston Journal of Mathematics. University of Houston, Department of Mathematics.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Houston Journal of Mathematics. Houston, Tex: University of Houston, Department of Mathematics, 1975.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Houston Journal of Mathematics. University of Houston, Department of Mathematics, 1975.
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