James M. Acton and Mark Hibbs (March 2012). "Why Fukushima Was Preventable"(PDF). Carnegie Endowment for International Peace. Archived(PDF) from the original on 2016-11-02. Retrieved 2016-09-04.
James M. Acton and Mark Hibbs (March 2012). "Why Fukushima Was Preventable"(PDF). Carnegie Endowment for International Peace. Archived(PDF) from the original on 2016-11-02. Retrieved 2016-09-04.