Não informado. (1947). Osaka Mathematical Journal. University of Osaka, Department of Mathematics.
Chicago-referens (17:e uppl.)Não informado. Osaka Mathematical Journal. Osaka, Japão: University of Osaka, Department of Mathematics, 1947.
MLA-referens (8:e uppl.)Não informado. Osaka Mathematical Journal. University of Osaka, Department of Mathematics, 1947.
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