Alshammari, B. , Rabeh, A. , Mohamed, A.. "Interfacing Photovoltaic Systems to the Utility Grid: A Comparative Simulation Study to Mitigate the Impact of Unbalanced Voltage Dips". World Academy of Science, Engineering and Technology, Open Science Index 111, International Journal of Electrical and Computer Engineering (2016), 10(3), 399 - 403.