1. BP. BP statistical review of world energy – June 2019; 2019.
2. Six unvarnished truths: China and the global energy challenge;Cook;World Energy,2007
3. It's still the one;Yergin;Foreign Policy,2009
4. Petroleum's long good-bye;Bullis;Technol Rev,2009
5. Editorial comment: history lessons;Fischer;World Oil,2007