1. Ministry of Agriculture of the I.R. of Iran (MAJ). Portal of Iranian Agriculture; 2009:.
2. Singh JM. On farm energy use pattern in different cropping systems in Haryana, India. Germany: Int. Inst. of Management University of Flensburg. Sustainable Energy Systems and Management, Master of Science, 2000.
3. Energy use and economical analysis of potato production in Iran, a case study: Ardabil province;Mohammadi;Energy Conver Manage,2008
4. Ministry of Energy of Iran (MOE). Electrified wells report. Water Resources Management Institute; 2006 (in Farsi).
5. Energy input–output analysis in Turkish agriculture;Ozkan;Renew Energy,2004