1. U.S. International Energy Agency (IEA). World Energy Outlook 2013;IEA:Washington, D.C., 2013.
2. Curtis, M. E., Ambrose, R. J., and Sondergeld, C. H.Investigation of the relationship between organic porosity and thermal maturity in the Marcellus Shale.Proceedings of the North American Unconventional Gas Conference and Exhibition; The Woodlands, TX, June 14–16, 2012; SPE Paper 144370.
3. High-Pressure Methane Sorption Isotherms of Black Shales from The Netherlands
4. The importance of shale composition and pore structure upon gas storage potential of shale gas reservoirs
5. Curtis, M. E.; Ambrose, R. J.; Sondergeld, C. H.Structural characterization of gas shales on the micro- and nano-scales.Proceedings of the Canadian Unconventional Resources and International Petroleum Conference; Calgary, Alberta, Canada, Oct 19–21, 2010; SPE Paper 137693.