http://www.bmobile.ne.jp/english/
http://hanaryokou.pixnet.net/blog/post/125059363-%5B%E6%95%99%E5%AD%B8%5D%E6%97%A5%E6%9C%AC%E8%A1%8C%E5%8B%95%E4%B8%8A%E7%B6%B2-b-mobile-1g-14%E5%A4%A9%E8%A8%AA%E5%AE%A2%E7%89%88%E4%B8%8A%E7%B6%B2
https://www.kadokawa.com.tw/p9-news_detail.php?seriesa=11&id=808
