Yuliani, U., Ramdani, R., Haryanto, F., Perkasa, Y. and Sanjaya, M. (2016) “Design and Analysis Effect of Gantry Angle Photon Beam 4 MV on Dose Distributions using Monte Carlo Method EGSnrc Code System”, Indonesian Journal of Physics, 27(1), pp. 18 - 20. doi: 10.5614/itb.ijp.2016.27.1.3.