1. Amin S., and Farjood M.H. 2005. Loss of engine power and efficiency of pumping stations and water pumps for agricultural land plains of the kovar. Extender conditioning installations Engineering Journal. (in Persian)
2. Connors D.P., Robechek J.D., and Jarc D. 1982. Adjustable Speed Drive as Application to Centrifugal Pumps. Rockwell Automation. Publication D7737.
3. Farmani Marzankalateh A., and Ourei H. 2003. Energy consuming management in electropumps. Fourth Energy National Conference. National Energy Committee of the Islamic Republic of Iran. Deputy Power and Energy Ministry of Energy. Tehran. (in Persian)
4. Fazeli M., Soltanzadeh A., Sangroodi A., and Khosravi M. 2009. The role of variable speed pumps in reduces accidents of urban water distribution network. Articles Collections in First International Conference on Engineering and Infrastructure Management. Engineering college of University of Tehran. (in Persian)
5. Hanson R., and weigand C. 1996. Variable Frequency Drive for Electric Irrigation Pumping Plants saves Energy. Journal of Irrigation and drainage Engineering. 104:179-182
6. Hydraulic Institute, Euro pump and U.S department of Energy. 2004. Variable Speed Pumping. DOE/102004-1913.
7. Lamaddalena N., and Khila S. 2012. Energy Saving with Variable Speed Pumps in on-demand Irrigation Systems. Journal of Irrigation Science 30:157–166.
8. Mohammadi H. 2012. The role of Round and variable frequency electro motors in optimization of energy consumption. Fourth Rotating Equipment Conference on oil and Energy industries. Tehran. (in Persian)
9. Raiesian Amiri Z. 2012. Study and design of pumping stations equipped with variable speed pumps. Master's thesis. University of Tehran. (in Persian)
10. Volk M. 2005. Pump Characteristics and Applications. Chapter 6. Second Edition. Taylor and Francis Group. LLC 373-395.