Aqeel Ali Al-Attar, Safaa Mohammad Hasony, and Ali Hussein Ali. “The Effect of Spin Coating Speed and Deposition Parameters on the Crystalline Size of ZnO Thin Films”. Diyala Journal of Engineering Sciences, vol. 6, no. 4, Dec. 2013, pp. 100-6, doi:10.24237/djes.2013.06407.