1. Canter, L. W., Knox, R. C. and Fairchild, D. M.: 1987, ?Pollution Source Prioritization?, Ground Water Quality Protection, Lewis Publishers, Inc., Chelsea, Michigan, pp. 277?323.
2. Canter, L. W., Knox, R. C., Sabatini, D. A., Vieux, B. E., Shaw, K. M., Chowdhury, A. K., Overton, D. R. and Kamath, J.: 1992. ?Ground Water Contaminant Identification and Prioritization?, 2-volume report prepared on Cooperative Agreement CR 819003-01-0, University of Oklahoma, Norman, Oklahoma (submitted to U.S. Environmental Protection Agency, Ada, Oklahoma).
3. Cohenour, D.: 1990, ?Nitrate Contamination in the Central Oklahoma Aquifer System?, Master's Thesis, University of Oklahoma, Norman, Oklahoma.
4. Forbes, R.: 1990, ?Assessment of Nitrate Contamination of Ground Water in the Arkansas River Alluvium in Northwestern Osage County?, Master's Thesis, University of Oklahoma, Norman, Oklahoma.
5. Lucius, J. E. et al.: 1990 ?Properties and Hazards of 108 Selected Substances?, Open-File Report 90-408, U.S. Geological Survey, Golden, Colorado.