1. Nordeng SH, Helms LD. Bakken source system – Three Forks Formation assessment. North Dakota Department of Mineral Resources, 2010. 22 p.
2. Continental Resources Inc. Bakken and Three Forks. www.contres.com/operations/bakkenand-three-forks (accessed May 30, 2013).
3. LeFever J, Helms L. Bakken Formation reserve estimates. North Dakota Geological Survey white paper, Bismarck, North Dakota: North Dakota Geological Survey; 2008. p. 6.
4. Nordeng SH, LeFever JA, Anderson FJ, Bingle-Davis M, Johnson EH. An examination of the factors that impact oil production from the middle member of the Bakken Formation in Mountrail County, North Dakota. North Dakota Geological Survey, RI-109; 2010.
5. Jarrell PM, Fox CE, Stein MH, Webb SL. Practical aspects of CO2 flooding. SPE Monograph v. 22, Henry L. Doherty Series, Richardson, Texas, 2002. p. 220.