Hammadi, Hassan, and Ayad A. AL-Ani. 2020. “Qualitative and Quantitative Studies of the Effects of Spherical Aberration on the Optical System in the Cases of Coherent and Incoherent Illumination”. Iraqi Journal of Science 61 (10), 2599-2609. https://doi.org/10.24996/ijs.2020.61.10.16.