1- Ari A. Abdulrahman, "Grid-Connected Photo Voltaic System Design for Koya Software Engineering Department in Iraq", International Journal of Engineering
    Trends and Technology (IJETT) – Volume 10 Number 2 - Apr  2014.
2- Saman Mirza Abdullah, Ari Arif Abdulrahman, "Economical Environmental and Performance Analysis for a 200 KW Ground Mounted Photovoltaic System: Koya       City, Kurdistan of Iraq", International Journal of Engineering Technology, Management and Applied Sciences (IJETMAS),  March 2015, Volume 3 Issue 3, ISSN 
3- Ari Arif Abdulrahman, Saman Mirza Abdulla, "Performance Analysis of a Photovoltaic System Koya - Kurdistan of Iraq", International Journal of Computer 
    Science and Electronics Engineering (IJCSEE) Volume 3, Issue 2, 2015, ISSN 2320-4028.

1- A. A. Abdulrahman, "Proposition for Application of Grid-Connected Photovoltaic (PV) System-Koya City as a Study Case", 1st International Symposium on Urban 
    Development: Koya as a Case Study, Koya, Kurdistan, Iraq, pp. 135-142, December 16-18, 2013. 
2- Ari Abdulrahman, Saman Abdullah, Carolin Danial, " Minimizing Electricity Shortages in Koya City in Iraq using Photo Voltage Grid System Simulation", 
    International Conference on Challenges in Engineering & Technology (ICCET14), April 22-23, 2014 Bankok (Thailand).