Yoshio Okubo, Vice Chairman, Japan Securities Dealers Association. Comparison of Global Financial Center. Harvard Law School, Program on International Financial Systems, Japan-U.S. Symposium. October 2014 [30 May 2015]. (原始内容存档于2015-07-04).
Yoshio Okubo, Vice Chairman, Japan Securities Dealers Association. Comparison of Global Financial Center. Harvard Law School, Program on International Financial Systems, Japan-U.S. Symposium. October 2014 [30 May 2015]. (原始内容存档于2015-07-04).