Nur Krisna, D., & Su’ud, Z. (2012). Study Neutronic of Small Pb-Bi Cooled Non-Refuelling Nuclear Power Plant Reactor (SPINNOR) with Hexagonal Geometry Calculation. Indonesian Journal of Physics, 23(1), 16 - 22. https://doi.org/10.5614/itb.ijp.2012.23.1.4