H. J. M. Al-Agealy and M. J. Sahib, “Theoretical Evaluations of Probability of Photons Yield Depending on Quantum Chromodynamics Theory”, IHJPAS, vol. 2017, no. IHSCICONF, pp. 179–186, Apr. 2018, doi: 10.30526/2017.IHSCICONF.1790.