Negus-deWys, J. (ed.). Industrial Consortium for the Utilization of the Geopressured-Geothermal Resource. Volume 1, article, March 1, 1990; (https://digital.library.unt.edu/ark:/67531/metadc889881/m1/1/: accessed October 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .