OHIRA, Akio. Holocene sea-level changes and evolution of the lower Tokachi River plain, Hokkaido, Japan. Geografia Fisica e Dinamica Quaternaria, [S. l.], v. 6, p. 71–84, 2003. Disponível em: https://www.gfdq.glaciologia.it/index.php/GFDQ/article/view/1257.. Acesso em: 29 apr. 2026.