Boysen, J. & Morotti, J. Evaluation of the freeze-thaw/evaporation process for the treatment of produced waters. Quarterly technical progress report, January 1, 1995--March 31, 1995, report, April 1, 1995; (https://digital.library.unt.edu/ark:/67531/metadc780909/m1/1/: accessed September 24, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .