1. USDA-NRSC Natural Resource Conservation Service, U.S. Department of Agriculture 2016. Environmental Quality Incentives Program. Available at: https://www.nrcs.usda.gov/wps/portal/nrcs/main/national/programs/financial/eqip/ (Retrieved January 21, 2017).
2. Griffin TW , Lowenberg-DeBoer J , Lambert DM , Peone J , Payne T and Daberkow SG 2004. Adoption, Profitability, and Making Better Use of Precision Farming Data. Staff Paper #04-06 Department of Agricultural Economics, Purdue University, USA. http://ageconsearch.umn.edu/bitstream/28615/1/sp04-06.pdf (Retrieved January 21, 2017).
3. Farmer Experience with Precision Agriculture in Denmark and the US Eastern Corn Belt
4. Stabel J , Griffin TW and Ibendahl G 2016. Likelihood of Kansas Farm Financial Persistence. Kansas State University Department of Agricultural Economics Extension Publication. KFMA Research Article. December 2016. https://www.agmanager.info/likelihood-kansas-farm-financial-persistence (Retrieved January 21, 2017).