Aller, L., Bennett, T., Lehr, J., Petty, R. J., and Hackett, G.: 1987, DRASTIC: A standardized system for evaluating ground water pollution potential using hydrogeologic settings, NWWA/EPA Series, EPA/600/2–87/035. Washington, D.C.
Anderson, J. R., Hardy, E. E., Roach, J. T., and Wimer, R. E.: 1976, A land use and land cover classification system for use with remote sensing data, U.S. Geological Survey, Prof. Paper 964, Reston, VA, p. 28.
Anderson, M. B.: 1994, Vulnerability to disaster and sustainable development: A general framework for assessing vulnerability, in M. Munasinghe and C. Clarke (eds), Disaster Prevention for Sustainable Development: Economic and Policy Issues, A Report from the Yokohama World Conference on Natural Disaster Reduction. May 23–27, 1994.
Blaikie, P., Cannon, T., Davis, I., and Wisner, B.: 1994, At Risk: Natural Hazards, People Vulnerability, and Disasters, Routledge Publishers, London and New York.
Bohle, H. G., Downing, T. E., and Watts, M. J.: 1994, Climate change and social vulnerability. Toward a sociology and geography of food insecurity, Global Environ. Change
Borton, J. and Shoham, J.: 1990, Guidelines for WFP County Offices Preparing Baseline Vulnerability Map: The Sudan Case Study, Relief and Development Institute, London, U.K.
Cassel, D. K. and Nielsen, D. R.: 1986, Field capacity and available water capacity, in A. L. Page et al. (eds), Methods of Soil Analysis. Part 2, 2nd edn, pp. 901–926. Agron. Monogr. 9. ASA and SSA, Madison, WI.
Chambers, R.: 1989, Editorial introduction: Vulnerability, coping and policy, Inst. Develop. Stud. Bull.
Chang, T. J., Germain, R., and Bartrand, T.: 1997, Development of a GIS procedure for the study of evaporation and infiltration in case of drought, Comp. Civ. Eng. 606–614.
Currey, B.: 1978, Mapping of Areas Liable to Famine in Bangladesh, Ph.D. dissertation, Manoa, University of Hawaii.
De Jager, J. M., Howard, M. D., and Fouche, H. J.: 1997, Computing drought severity and forecasting its future impact on grazing in a GIS, in D. A. Wilhite (ed.), Hazards and Disaster: A Series of Definite Works, Routledge Publishers, U.K.
Dow, K.: 1993, Exploring differences in our common future(s): The meaning of vulnerability to global environmental change, Geoforum
Downing, T. E.: 1991, Assessing socioeconomic vulnerability to famine: Frameworks, concepts, and applications, Research Report. The Alan Shawn Feinstein World Hunger Program, Brown University, Providence, Rhode Island.
Downing, T. E. and Bakker, K.: 2000, Drought discourse and vulnerability. Chapter 45, in D. A. Wilhite (ed.), Drought: A Global Assessment, Natural Hazards and Disasters Series, Routledge Publishers, U.K.
Drew, L. G.: 1974, Tree Ring Chronologies in Western America, IV. Colorado, Utah, Nebraska, and South Dakota, Laboratory of Tree-Ring Research, University of Arizona, Tucson.
Eastman, J. R, Emani, S., Hulina, S., Jiang, H., Johnson, A., and Ramachandran, M.: 1997, Application of Geographic Information Systems (GIS) Technology in Environmental Risk Assessment and Management, Idrisi Project, Clark University, Worcester, MA.
Ghosh, T. K.: 1997, Investigation of drought through digital analysis of satellite data and geographical information systems, Theor. Appl. Climatol.
Hewitt, K.: 1997, Regions at Risk. A Geographical Introduction to Disasters, Addison Wesley Longman Limited. England.
Hubbard, K. G.: 1992, Climatic factors that limit daily evapotranspiration in sorghum, Climate Res.
Irrigation Journal: 1999, 1998 Annual Irrigation Survey,
Jackson, C. I.: 1991, Response strategies for the great plains: Canadian and U.S. perspectives, in G. Wall (ed.), Symposium on the Impacts of Climatic Change and Variability on the Great Plains, Department of Geography Publication Series, Occasional Paper No. 12, University of Waterloo, pp. 93–103.
Karl, T. R.: 1983, Some spatial characteristics of drought duration in the United States, J. Climate Appl. Meteor.
Karl, T. R., Quilan, F. and Ezell, D. D.: 1987, Drought termination and amelioration: Its climatological probability. J. Climate Appl. Meteor.
Kates, R. W.: 1985, The interaction of climate and society, in R. W. Kates, J. H. Ausubel and M. Berbarian (eds), Climate Impacts Assessment, John Wiley, Chichester, pp. 3–36.
Keenan, S. P. and Krannich, R. S.: 1997, The social context of perceived drought vulnerability. Rural Sociol.,
Kern, J. S.: 1995, Geographic patterns of soil water-holding capacity in the contiguous United States, Soil Sci. Soc. Amer. J.
Klocke, N. L. and Hergert, G. W.: 1990, How soil holds water, NebGuide
G90–964, INAR, University of Nebraska, Lincoln.
Knutson, C., Hayes, M., and Phillips, T.: 1998, How to Reduce Drought Risk, Western Drought Coordination Council Preparedness and Mitigation Group.
Kogan, F. N.: 1990, Remote sensing of weather impacts on vegetation in non-homogeneous areas, Inter. J. Remote Sens.
Kogan, F. N.: 1997, Global drought watch from space, Bull. Amer. Meteor. Soc.
Lawson, M. P., Heim, R. Jr., Mangimeli, J. A., and Moles, G.: 1980, Dendroclimatic analysis of Bur Oak in eastern Nebraska, Tree-Ring Bull.
Liu, W. T. and Kogan, F. N.: 1996, Monitoring regional drought using the Vegetation Conditions Index, Inter. J. Remote Sens.
Lockeretz, W.: 1981, The Dust Bowl: Its relevance to contemporary environmental Problems, in M. P. Lawson and M. E. Baker (eds.), The Great Plains: Perspectives and Prospects, University of Nebraska Press, Lincoln, pp. 11–31.
Lourens, U.W.: 1995, A System for Drought Monitoring and Severity Assessment, Ph.D. dissertation. Faculty of Agriculture, Department of Agrometeorology, University of the Orange Free State.
Lozano-Garcia, D. F., Fernandez, R. N., Gallo, K. P., and Johannsen, C. J.: 1995, Monitoring the 1988 severe drought in Indiana, U.S.A. using AVHRR data, Inter. J. Remote Sens.
Matthews, K. B., MacDonald, A., Aspinall, R. J., Hudson, G., Law, A. N. R., and Paterson, E.: 1994, Climatic soil moisture deficit-climate and soil data integration in a GIS, Climatic Change
Muhs, D. R. and Holliday, V. T.: 1995, Evidence of active dune sand on the Great Plains in the 19th century from accounts of early explorers, Quarter. Res.
Musick, J. T. and Porter, K. B.: 1990, Wheat, in B. A. Stewart and D. R. Nielson (eds), Irrigation of Agricultural Crops, Amer. Soc. Agron. Inc., Crop Sci. Soc. Inc., Soil Sci. Soc. Inc. Madison, Wisconsin, USA, pp. 597–638.
National Agricultural Statistics Service (NASS): 1997, 1997 Census of Agriculture. http://www.nass.usda.gov/census/census97/profiles/ne/ne.htm, United States Department of Agriculture.
National Agricultural Statistics Service (NASS): 1998, Nebraska Agricultural Statistics 1997–1998, Nebraska Department of Agriculture, USDA National Agricultural Statistics Service.
Nebraska Department of Water Resources: 1998, Registered Groundwater Wells Data Base. Nebraska Natural Resources Commission Web Page: http://www.nrc.state.ne.us/docs/, Lincoln, NE.
Opie, J.: 1989, 100 years of climate risk assessment on the High Plains: which farm paradigm does irrigation serve? Agric. Hist.
Peters, A. J., Rundquist, D. C., and Wilhite, D. A.: 1991, Satellite detection of the geographic core of the 1988 Nebraska drought, Agric. For. Meteorol.
Reece, P. E., Alexander, J. D. III, and Johnson, J. R.: 1991, Drought Management on Range and Pastureland. A Handbook for Nebraska and South Dakota, Cooperative Extension Division, University of Nebraska, Lincoln.
Reed, B. C.: 1993, Using remote sensing and Geographic Information Systems for analyzing landscape/drought interaction. Inter. J. Rem. Sen.
Riebsame, W. E., Changnon, S. A. Jr., and Karl, T. A.: 1991. Drought and Natural Resources Management in the United States. Impacts and Implications of the 1987–1989 Drought, Westview Press Inc., Boulder, Colorado.
Schurle, B. and Tholstrup, M.: 1989. Farm characteristics and business risk in production agriculture, North Central J. Agr. Econ.
Soil Survey Staff: 1975, Soil Taxonomy. A Basic System of Soil Classification for Making and Interpreting Soil Surveys, USDA Soil Conservation Service, Agric. Handbook No. 436. U.S. Government Printing Office, Washington D.C.
Soule, P. T.: 1992, Spatial patterns of drought frequency and duration in the contiguous USA based on multiple drought event definitions, Inter. J. Clim.
Stockton, C. W. and Meko, D. M.: 1983, Drought recurrence in the Great Plains as reconstructed from long-term tree-ring records, J. Clim. Appl. Meteor.
Supalla, R. J.: 1997, Factors Influencing Future Demand for Water, Water Resources Seminar. University of Nebraska, Lincoln, February 19, 1997.
Thiruvengadachari, S. and Gopalkrishna, H. R.: 1993, An integrated PC environment for assessment of drought, Inter. J. Rem. Sen.
Timmerman, P.: 1981, Vulnerability, Resilience and the Collapse of Society. Environmental Monograph No. 1, Institute for Environmental Studies, University of Toronto, Canada.
Tucker, C. J. and Goward, S. N.: 1987, Satellite remote sensing of drought conditions, in D. A. Wilhite and W. E. Easterling (eds), Planning for Drought: Toward a Reduction of Societal Vulnerability, Western Press, Boulder, CO.
USAID/FEWS Project: 1994, Vulnerability Assessment, Published for USAID, Bureau for Africa, Disaster response coordination, USAID/FEWS, Arlington, VA.
U.S. Census Bureau: 1999, TIGER Overview. http://www.census.gov/geo/www/tiger/overview.html
Walsh, J. E., Richman, M. B., and Allen, D. W.: 1982, Spatial coherence of monthly precipitation in the United States, Month. Weath. Rev.
Walsh, S. J.: 1987, Comparison of NOAA AVHRR data to meteorologic drought indices, Photogr. Eng. Rem. Sens.
Waltman, B. J., Sinclair, H. R., and Waltman, S. W.: 1997, Characteristics and mapping soil climate in the Northern Plains region, in D. S. Ojima, W. E. Easterling, and C. Donofrio (eds), Climate Change Impacts on the Great Plains, OSTP/USGRPWorkshop, Fort Collins, CO.
Waltman, W. J.: 1999, Center for Advanced Land Management Information Technologies, University of Nebraska-Lincoln. Personal communications.
Weakly, H. E.: 1943, A tree-ring record of precipitation in western Nebraska, J. Forest.
Weakly, H. E.: 1965, Recurrence of drought in the Great Plains during the last 700 years, Agric. Engng.
Wilhelmi, O. V.: 1999, Methodology for Assessing Vulnerability to Agricultural Drought: A Nebraska Case Study, Ph.D. dissertation. University of Nebraska, Lincoln.
Wilhite, D. A.: 1981, An Analysis of Nebraska's Precipitation Climatology, with Emphasis on the Occurrence of Dry Conditions, Misc. Publ. 42. Agric. Experim. Stat., University of Nebraska, Lincoln.
Wilhite, D. A.: 1992, Preparing for Drought. A Guidebook for Developing Countries, Climate Unit, United Nations Environment Program, Nairobi, Kenya.
Wilhite, D. A.: 1993, The enigma of drought, Chapter 1, in D. A. Wilhite (ed.), Drought Assessment, Management, and Planning: Theory and Case Studies, Kluwer Academic Publishers, Boston, MA, pp. 3–17.
Wilhite, D. A.: 1997, Responding to drought: common threads from the past, visions for the future, J. Amer. Water Res. Assoc.
Wilhite, D. A.: 2000a, Drought: A Global Assessment, Natural Hazards and Disasters Series, Routledge Publishers, U.K.
Wilhite, D. A.: 2000b, Drought as a natural hazard: Concepts and definitions, Chapter 1, in D. A. Wilhite (ed.), Drought: A Global Assessment, Natural Hazards and Disasters Series, Routledge Publishers, U.K.
Woodhouse, C. A. and Overpeck, J. T.: 1998, 2000 years of drought variability in the central United States, Bull. Amer. Meteor. Soc.
World Food Programme (WFO): 1998, WFP Vulnerability Mapping Guidelines. http://www.wfp.org/DM_VAM_WFPMapGuide.html, 2.