Paal, Mark, Isaac Nkrumah, Francis Ampong, David Ngbiche, Robert Nkum, and Francis Boakye. “The Effect of Deposition Time and Sulfurization Temperature on The Optical and Structural Properties of Iron Sulfide Thin Films Deposited from Acidic Chemical Baths”. Science Journal of University of Zakho 8, no. 3 (September 30, 2020): 97-104. Accessed October 28, 2020.