Dildar, Ishrat Mubeen, Maria Zafar, Ahmad Shuaib, Saima Shaukat, and Saif-ur- Rehman. 2016. “Tuning the Morphological and Structural Properties of Zinc Oxide by Chemical Doping of Nickel Oxide”. Journal of the Pakistan Institute of Chemical Engineers 44 (1):76-83. http://piche.org.pk/journal/index.php/jpiche/article/view/264.