1. Shale gas – the unfolding story;Rogers;Oxford Review of Economic Policy,2011
2. The ‘shale gas revolution’: developments and changes;Stevens,2012
3. US shale gas: less abundance, higher cost;Berman,2011
4. Shale gas—abundance or mirage? Why the Marcellus shale will disappoint expectations;Berman,2010
5. A review of regional and global estimates of unconventional gas resources;McGlade,2011