S. A. Othman, F. I. Jomiul @Fazlan, C. Billy, A. R. Justin, and L. M. Paul Vencent, “Manual Processing of X-Ray and Gamma-Ray Films – Preliminary Study”, Semarak Int. J. Electr. Syst. Eng. , vol. 6, no. 1, pp. 13–18, Jun. 2025.