KARIM, M.S.; ABBAS, F.I.; MNAWER, E.M; ABASS, K.H. Measurement of radon gas concentration in fertilizer samples by using nuclear track detector (CR-39). Journal of Kufa-Physics, Kufa, Najaf, IRAQ, v. 3, n. 2, 2011. Disponível em: https://journal.uokufa.edu.iq/index.php/jkp/article/view/7419. Acesso em: 6 nov. 2026.