1. Johnson, H.; Crawford, P.; Bunger, J.Strategic Significance of America’s Oil Shale – Volume II: Oil Shale Resources, Technologies, and Economics;U.S. Department of Energy, Office of Naval Petroleum and Oil Shale Reserves:Washington DC,2003.
2. Biglarbigi, K.Oil Shale Development Economics; Presented at the EFI Heavy Resources Conference; Edmonton, Canada; May 16,2007.
3. Secure Fuels From Domestic Resources; The Continuing Evolution of America’s Oil Shale and Tar Sands Industries;U.S. Department of Energy, Office of Petroleum Reserves: Washington, DC,2008.
4. Proposed Oil Shale and Tar Sands Resource Management Plan Amendments to Address Land Use Allocations in Colorado, Utah, and Wyoming and Final Programmatic Environmental Impact Statement;Department of the Interior, Bureau of Land Management:Washington, DC,2008; p A-23; (Adapted from Nowacki, P.; 1981).
5. Crawford, P.; Biglarbigi, K.; Dammer, A.; Killen, J.; Knaus, E.Advances in World Oil Shale Production Technologies; Presented to Society of Petroleum Engineers, Annual Technical Conference and Exhibition; Denver, Colorado,2008.