1. Allen R.G., Pereira L.S., Raes D., and Smith M., Crop evapotranspiration: Guidelines for computing crop water requirements. FAO Irrigation and Drainage Paper 56. FAO - Food and Agriculture Organization of the United Nations. Rome, Italy, 1998.
2. A Smart System for Garden Watering using Wireless Sensor Networks;Constantinos,2011
3. The Use of the 1998 Penman-Monteith FAO Formula in order to Determine Referential Evapotranspiratio;Guevara-Diaz;Terra,2006
4. Water productivity in agriculture: limits and opportunities of improvement;Kijne,2003
5. Remote Sensing and Control of an Irrigation System Using a Distributed Wireless Sensor Network;Kim;IEEE TRansactions on Instrumentation and Measurement,2008