Garg, Sabodh K.; Pritchett, John W.; Alexander, James H. & Renner, Joel. Development of New Geothermal Wellbore Holdup Correlations Using Flowing Well Data, report, March 1, 2004; (https://digital.library.unt.edu/ark:/67531/metadc888846/m1/1/: accessed November 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .