1. C. D. Adams, S. J. Randtke, E. M. Thurman, and R. A. Hulsey , 1990 . Atrazine and Its Degradation Products in Soil and Ground Water, and the Effectiveness of Water-Treatment Processes for their Removal .In: Proceedings from the 40thAnnual University of Kansas Environmental Engineering Conference, 1990, PP.1 -24 .
2. W. A. Battaglin, and D. A. Goolsby , 1995 . Spatial Data in Geographic Information System Format on Agricultural Chemical Use, Land Use, and Cropping Practices in the United States . U.S. Geol. Surv.Water-Resour. Invest. Rep. 94-4176, 87 pp. (E-Mail: http://www.h2o.usgs.gov/publiclpubs/bat/bat000.html).