Salim, Duaa Abed, et al. “Theoretical Study of the Quadruple Gamma Transitions of Radioactive Radon and Radium Isotopes Based on Half-Life”. Al-Mustansiriyah Journal of Science, vol. 35, no. 4, Dec. 2024, pp. 42-51, https://doi.org/10.23851/mjs.v35i4.1550.