Abood, Loay, Shatha Al-Hilly, and Raaid Hassan. 2023. “Describing the Wavefront Aberrations of the Hexagonal Aperture Using Modified Zernike Polynomials”. Iraqi Journal of Science 54 (1): 222-31. https://www.ijs.uobaghdad.edu.iq/index.php/eijs/article/view/12063.