Não informado. (2020). Journal of the Faculty of Science, Hokkaido Imperial University. Hokkaido University, Department of Mathematics.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Journal of the Faculty of Science, Hokkaido Imperial University. Sapporo, Japão: Hokkaido University, Department of Mathematics, 2020.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Journal of the Faculty of Science, Hokkaido Imperial University. Hokkaido University, Department of Mathematics, 2020.
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