S. Bachu and K. Michael, “Possible Controls of Hydroge- ological and Stress Regimes on the Producibility of Coalbed Methane in Upper Cretaceous—Tertiary Strata of the Alberta Basin, Canada,” AAPG Bulletin, Vol. 87, No. 11, 2003, pp. 1729-1754. doi:10.1306/06030302015
 J. S. Bell and S. Bachu, “In Situ Stress Magnitude and Orientation Estimates for Cretaceous Coal-Bearing Strata Beneath the Plains Area of Central and Southern Alberta,” Bulletin of Canadian Petroleum Geology, Vol. 51, No. 1, 2003, pp. 1-28. doi:10.2113/gscpgbull.51.1.1
 T. Gentzis, “Review of Mannville Coal Geomechanical Properties: Application to Coalbed Methane Drilling in the Central Alberta Plains, Canada,” Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, Vol. 32, No. 4, 2009, pp. 355-369. doi:10.1080/15567030802466110
 H. E. Ross and M. D. Zoback, “Sub-Hydrostatic Pore Pressure in Coalbed and Sand Aquifers of the Powder River Basin, Wyoming and Montana, and Implications for Dis- posal of Coalbed-Methane-Produced Water through Injection,” Rocky Mountain Geology, Vol. 43, No. 2, 2008, pp. 155-169. doi:10.2113/gsrocky.43.2.155
 S. Hunze and T. Wonik, “Lithological and Structural Characteristics of the Lake Bosumtwi Impact Crater, Ghana: Interpretation of Acoustic Televierwe Images,” Meteoritics & Planetary Science, Vol. 42, No. 4-5, 2007, pp. 779- 792. doi:10.1111/j.1945-5100.2007.tb01074.x
 Y. Yang, T. A. Cloud and C. W. Van Kirk, “New Applications of Well Log Parameters in Coalbed Methane (CBM) Reservoir Evaluation at the Drunkards Wash Unit, Uinta Basin, Utah,” SPE Eastern Regional Meeting, Morgantown, 14-16 September 2005, Paper ID: SPE 97988.