“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 Sci.J, vol. 12, no. 1, pp. 204–209, Mar. 2015, doi: 10.21123/bsj.2015.12.1.204-209.