Hamad, Ari M., and Hiwa M. Qadr. “Gamma-Rays Spectroscopy by Using a Thallium Activated Sodium Iodide NaI(Ti)”. EURASIAN JOURNAL OF SCIENCE AND ENGINEERING, vol. 4, no. 1, Sept. 2018, pp. 99-111, https://doi.org/10.23918/eajse.v4i1sip99.