أحمد محمود, قبلان نجاح, and عمران سمر. 2020. “An Analytical Study of Diffraction of Light by a Circular Aperture Using Spherical Harmonics for n≤2”. Latakia University Journal -Basic Sciences Series 42 (4). https://journal.latakia-univ.edu.sy/index.php/bassnc/article/view/9950.