Ibrahim, U. et al. 2026. COMPARISON OF CALCULATED PERCENTAGE DEPTH DOSES AT EXTENDED SOURCE-TO-SURFACE DISTANCE FOR 6 MV AND 15 MV PHOTON BEAM OF A LINEAR ACCELERATOR. Journal of Radiography and Radiation Sciences. 32, 1 (Jan. 2026), 98–103. DOI:https://doi.org/10.82547/jrrs.vol32no1.64.