1. AdamsT. M., TangA. Y., and WeigandN.: 1993, Spatial data models for managing subsurface data, J. Comput. Civil Eng. ASCE 6(3), 260?277.
2. Adams, T. M. and Bosscher, P.: 1992, Management of subsurface data using spatial analysis, Proc. 8th Conf. Comput. Civil Eng. GIS Symp., pp. 582?589.
3. Albertson, P. E. and Williamson, A. N.: 1992, Engineering answers to groundwater impact questions using a geographic information system (GIS), Proc. ASCE National Conference on Irrigation and Drainage, Baltimore, MD, 2?6 August, 505?510.
4. BakerC. P., BradleyM. D., and BobiakM. K.: 1993, Wellhead protection area delineation: linking flow models with GIS, J. Water Resour. Plan. Manage. ASCE 119(2), 275?287.
5. Baker, V. R., Demsey, K. A., Ely, L. L., Fuller, J. E., House, P. K., O'Connor, J. E., Onken, J. A., Pearthree, P. A., and Vincent, K. R.: 1990, Application of geological information to Arizona flood hazard assessment, Proc. ASCE Int. Conf. and Symp. Hydraulic Eng., San Diego, CA, July 30?August 3, pp. 621?626.