[1] http://www.asj.or.jp/geppou/archive_open/1931/pdf/193110.pdf#page=9

[2] http://www.asj.or.jp/geppou/archive_open/1914/pdf/191411.pdf#page=5

• [4] Proceedings of the Pan-Pacific Science Congress, Australia, 1923: Melbourne ... - Google ブックス, 2021-10-07T10:03:14.000Z https://books.google.co.jp/books?id=MOYIAQAAIAAJ&pg=PA632
• [3] Proceedings of the Pan-Pacific Science Congress, Australia, 1923: Melbourne ... - Google ブックス, 2021-10-07T10:01:07.000Z https://books.google.co.jp/books?id=MOYIAQAAIAAJ&pg=PA46