1. T.U.A Towsend, Method for estimating the long-term performance of direct-coupled photovoltaic systems, M.S. Thesis, Solar Energy Laboratory, University of Wisconsin, 1989.
2. X. Liu, L.A.C. Lopes, An improved perturbation and observation maximum power point tracking algorithm for PV arrays, in: Power Electronics Specialists Conference, PESC 04, 2004, IEEE 35th Annual vol. 3, 2004, pp. 2005–2010.
3. Handbook photovoltaic science and engineering, the physics of the solar cell. Characteristic curve considering its shunt resistance—new approche;Luque;Vacuum,2002
4. Øystein Ulleberg, Stand-alone power systems for the future: optimal design, operation & control of solar-hydrogen energy systems, Ph.D. Dissertation, Norwegian University of Science and Technology, Trondheim, 1998.
5. A method to determine the solar cell series resistance from a sigle I–V, sigle I–V. Characteristic curve considering its shunt resistance—new approach;El-Adawi;Vacuum,2002