Lester, Yaal and Ferrer, Imma and Thurman, E. Michael and Sitterley, Kurban A. and Korak, Julie A. and Aiken, George and Linden, Karl G.  (2015) Characterization of hydraulic fracturing flowback water in Colorado: Implications for water treatment.  Science of The Total Environment, 512-51.  pp. 637-644. DOI: https://doi.org/10.1016/j.scitotenv.2015.01.043 <https://doi.org/10.1016/j.scitotenv.2015.01.043>