Não informado. (1970). Indiana University Mathematics Journal. Indiana University, Departament of Mathematics.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Indiana University Mathematics Journal. Bloomington, Ind: Indiana University, Departament of Mathematics, 1970.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Indiana University Mathematics Journal. Indiana University, Departament of Mathematics, 1970.
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