Septi, Revina, et al. “Analisis Kekritisan Sodium-Cooled Fast Reactor (SFR) Berdasarkan Variasi Bahan Bakar”. Jurnal Fisika Unand, vol. 7, no. 1, Jan. 2018, pp. 69-72, doi:10.25077/jfu.7.1.69-72.2018.