[1] Wier, M. and Anderson, L.M. (2003) Demand for Organic Foods—Attitudes, Values and Purchasing Behaviors. Newsletter from Danish Research Center Farming, 2, 1-3.
[2] Wilson, J.D., Whittingham, M.J. and Bradbury, R.B. (2005) The Management of Crop Structure: A General Approach to Reversing the Impacts of Agricultural Intensification on Birds? Ibis, 147, 453-463.
http://dx.doi.org/10.1111/j.1474-919x.2005.00440.x
[3] Gabriel, D., Carver, S.J., Durham, H., Kunin, W.E., Palmer, R.C., Sait, S.M., Stagl, S. and Benton, T.G. (2009) The Spatial Aggregation of Organic Farming in England and Its Underlying Environmental Correlates. Journal of Applied Ecology, 46, 323-333.
http://dx.doi.org/10.1111/j.1365-2664.2009.01624.x
[4] Lichtfouse, E. (2009) Sociology, Organic Farming, Climate Change and Soil Science. Springer, Dordrecht.
[5] Ongley, E.D. (996) Control of Water Pollution from Agriculture. FAO Irrigation and Drainage Paper No. 55, FAO, Rome.
[6] Convey, G.R. and Pretty, J.N. (988) Fertilizer Risks in the Developing Countries: A Review. International Institute for Environment and Development, London.
[7] Dahan, O., Babad, A., Lazarovitch, N., Russak, E.E. and Kurtzman, D. (2013) Nitrate Leaching from Intensive Organic Farms to Groundwater. Hydrology and Earth System Sciences Discussions, 10, 9915.
http://dx.doi.org/10.5194/hessd-10-9915-2013
[8] Jeffords, J.M. (2011) Effects of Organic Farming on Water Quality.
https://www.uvm.edu/~vlrs/Environment/organic%20farming%20and%20lake%20pollution.pdf
[9] Ignazi, J.C. (1993) Prevention of Water Pollution by Agriculture and Related Activities. Proceedings of the FAO Expert Consultation, Water Report 1, 247-261.
[10] Maynard, E., Overstreet, B. and Riddle, J. (2011) Watch out for: Pesticide Drift and Organic Production.
https://www.extension.purdue.edu/extmedia/ho/dw-1-w.pdf
[11] Economic Research Service (ERS) (2014) Major Land Uses.
http://www.ers.usda.gov/data-products/major-land-uses.aspx
[12] Economic Research Service (ERS) (2013) Organic Production.
http://www.ers.usda.gov/data-products/organic-production.aspx
[13] EPA (2015) Reducing Pesticide Drift. http://www2.epa.gov/reducing-pesticide-drift
[14] Lee, E.H., Burdick, C.A. and Olszyk, D.M. (2005) GIS-Based Risk Assessment of Pesticide Drift Case Study: Fresno County.
http://www.epa.gov/wed/pages/publications/authored/EPA600R-05029PesticideDriftLee.pdf
[15] Petch, J. and Reeve, D.E. (1999) GIS, Organisations and People: A Socio-Technical Approach. CRC Press, Boca Raton.
[16] Mennecke, B.E. and West, L.A. (2001) Geographic Information Systems in Developing Countries: Issues in Data Collection, Management, and Use. The Journal of Global Information Management, 9, 45-55.
http://dx.doi.org/10.4018/jgim.2001100103
[17] Lazakidou, A.A. (2009) Web-Based Applications in Healthcare and Biomedicine. Springer Science & Business Media, New York.