“Studying the X- Ray Atomic Scattering Form Factor and Nuclear Magnetic Shielding Constant for Be Atom in Its Excited State (1s2 2s 3s) and the Be - Like Ions”. Baghdad Science Journal 12, no. 1 (March 1, 2015): 204–209. Accessed June 18, 2025. https://bsj-ojs.uobaghdad.edu.iq/index.php/BSJ/article/view/541.