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Agresti, Alan. 2002. Categorical Data Analysis. 2d ed. Hoboken, NJ: Wiley Interscience.
Bailer, A. John , and James T. Oris . 1994. "Assessing toxicity pollutants in aquatic systems." Case Studies in Biometry. N. Lange , L. Ryan , L. Billard , D. Brillinger , L. Conquest , and J. Greenhouse , eds. New York, NY: John Wiley & Sons, Inc.