1. Site-specific farming: a perspective on information needs benefits and limitations;Atherton;Journal of Soil and Water Conservation,1999
2. Precision Farming Profitability,2000
3. Gelb, E.M., Schiefer, G., Parker, C., Rosskopf, K., 1999. ‘Why is the IT adoption rate by farmers so slow?’ (EFITA papers-http://www.efita.dk). October, p. 2.
4. Gelb, E., Parker, C.G., Wagner, P., Rosskopf, K., 2001. ‘Why is the ICT adoption rate by farmers still so slow?’ Paper presented at the International Conference on Agricultural Science and Technology, Beijing, PROC, November.
5. Planning for Innovation through Dissemination and Utilization of Knowledge;Havelock,1971