Ohira, A. (2003) “Holocene sea-level changes and evolution of the lower Tokachi River plain, Hokkaido, Japan”, Geografia Fisica e Dinamica Quaternaria, 6, pp. 71–84. Available at: https://www.gfdq.glaciologia.it/index.php/GFDQ/article/view/1257 (Accessed: 14 May 2026).