Specht, W.L. Results of Toxicity Studies Conducted on Ceriodaphnia dubia and Daphnia ambigua in Support of an Alternate Species Demonstration, January - June 2000, report, January 14, 2003; (https://digital.library.unt.edu/ark:/67531/metadc735103/m1/1/: accessed December 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .