Khalid K. Mohammed, D., G. H. Shakoory, and Z. J. Jerjees. “Study and Fabrication of High Efficiency Indium Doped SnO2/SiO2/ N– Si Solar Cells”. Al-Rafidain Engineering Journal (AREJ), vol. 20, no. 3, June 2012, pp. 35-43, doi:10.33899/rengj.2012.50476.