[再]木が語る銀行合併史 http://okane.robots.jp/2021/09/22/%e5%86%8d%e6%9c%a8%e3%81%8c%e8%aa%9e%e3%82%8b%e9%8a%80%e8%a1%8c%e5%90%88%e4%bd%b5%e5%8f%b2/