A Dialect-Geographical Study of the Japanese Accents in Chiba Prefecture 論文 Willem A. Grootaers ·1958-10-01 ·『Monumenta Nipponica』 14(3/4) pp. 247-247 doi:10.2307/2382771
The Kuma Formation with Special Reference to the Upper Permian in Japan 論文 Kametoshi Kanmera ·1953-01-01 ·『The Journal of the Geological Society of Japan』 59(697) pp. 449-468 doi:10.5575/geosoc.59.449