Bourcier, W L; Lin, M & Nix, G. Recovery of Minerals and Metals from Geothermal Fluids, article, September 6, 2005; (https://digital.library.unt.edu/ark:/67531/metadc892471/m1/1/: accessed July 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .