Template-Type: ReDIF-Article 1.0 Author-Name: Peter R. Hartley and Kenneth B. Medlock III Title: Changes in the Operational Efficiency of National Oil Companies Classification-JEL: F0 Pages: Volume: Volume 34 Issue: Number 2 Year: 2013 Abstract: Handle: RePEc:aen:journl:ej34-2-02 File-URL: http://www.iaee.org/en/publications/ejarticle.aspx?id=2514 File-Format: text/html File-Restriction: Access to full text is restricted to IAEE members and subscribers.