Não informado. (2012). Toyama Mathematical Journal. University of Toyama, Faculty of Science, Department of Mathematics.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Toyama Mathematical Journal. Toyama, Japão: University of Toyama, Faculty of Science, Department of Mathematics, 2012.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Toyama Mathematical Journal. University of Toyama, Faculty of Science, Department of Mathematics, 2012.
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