http://www.ogj.com/articles/print/volume-111/issue-5/exploration---development/north-american-tight-oil-play-economics.html http://www.ogj.com/articles/print/volume-111/issue-4d/regular-features/ogj-newsletter.html http://www.ogj.com/articles/2013/04/cenovus-hikes-canada-oil-sands--conventional-output.html http://www.ogj.com/articles/2013/04/meg-reports-low-sor-in-sagd-pilot.html http://www.ogj.com/articles/2013/04/sunshine-sees-slight-west-ells-sagd-delay.html http://www.ogj.com/articles/print/volume-111/issue-2b/general-interest/commercial-bitumen-output-approaches.html http://www.ogj.com/articles/print/volume-111/issue-1c/regular-features/ogj-newsletter.html http://www.ogj.com/articles/2013/01/commercial-bitumen-output-approaches-from-grosmont-carbonate.html http://www.ogj.com/articles/2013/01/sunshine-oilsands-advancing-sagd-projects.html http://www.ogj.com/articles/2013/01/alberta-oilsands-reports-solvent-sagd-step.html