Não informado. (2020). Journal of the Faculty of Science, Hokkaido Imperial University. Hokkaido University, Department of Mathematics.
Chicago-referens (17:e uppl.)Não informado. Journal of the Faculty of Science, Hokkaido Imperial University. Sapporo, Japão: Hokkaido University, Department of Mathematics, 2020.
MLA-referens (8:e uppl.)Não informado. Journal of the Faculty of Science, Hokkaido Imperial University. Hokkaido University, Department of Mathematics, 2020.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.