M.A. Elhadidy, S.M. Shaahid, Feasibility of hybrid (wind + solar) power systems for Diiahran, Saudi Arabia, Renewable Energy, Vol. 16, pp. 97-976, 1999.
 S.A. Kaabeche, M. Belhamel, R. Ibtiouen, Techno-economic evaluation and optimization of integrated photovoltaic/wind energy conversion system, Solar Energy, Vol. 85, pp. 2407–2420, 2011.
 S. Dihrab, K. Sopian, Electricity generation of hybrid PV/wind systems in Iraq, Renewable Energy, Vol. 35, pp. 1303–1307, 2010.
 C. Li, X. Ge, Y. Zheng, C. Xu, Y. Ren, C. Song, C. Yang, Techno-economic feasibility study of autonomous hybrid wind/PV/battery power system for a household in Urumqi, China, Energy, Vol. 55, pp. 263-272, 2013.
 W. Zhou, C. Lou, Z. Li, L. Lu, H. Yang, Current status of research on optimum sizing of stand-alone hybrid solar–wind power generation systems, Applied Energy, Vol. 87, pp. 380–389, 2010.
 G. Bekele, B. Palm, Feasibility study for a standalone solar–wind-based hybrid energy system for application in Ethiopia, Applied Energy, Vol. 87, pp. 487–495, 2010.
 P. Nema, R.K. Nema, S. Rangnekar, A current and future state of art development of hybrid energy system using wind and PV-solar: A review, Renewable and Sustainable Energy Reviews, Vol. 13, pp. 2096–2103, 2009.
 Synoptic meteorological data, Kermanshah Regional Meteorology Office, 2015.
 F. James, J.G. Manwell, L.R. Anthony, Wind Energy Explained: Theory, Design and Application, New York: John Wiley & Sons, 2002..
 M. Zolfaghari, P. Ghiabi, M.N. Hashemi, J. Sepehri, Assesment of wind force density in Markazi province, Proceedings ofThe 14th Geophysics Conference of Iran, Tehran, Iran, pp. 202-206, May 2010. (in Persianفارسی)
 J. Wen, Y. Zheng, F. Donghan, A review on reliability assessment for wind power, Renewable and Sustainable Energy Reviews, Vol. 13, pp. 2485–2494, 2009.
 J.A. Duffie, W.A. Beckman, Solar Engineering of Thermal Processes, New York: John Wiley & Sons, 1990.
 J. Ghaemmaghami, E. Azad, H. Panahandeh, F. Geola, Solar Energy, Vol. 1 & 2, Tehran University, 2004. (in Persianفارسی)
 Available on: www.naftkala.com/companyprofile.aspx?cid=1442