Kuntoro, Iman, et al. “ANALYSIS OF REACTIVITY COEFFICIENT CHANGE DUE TO BURN UP IN AP1000 REACTOR CORE USING NODAL3”. Jurnal Teknologi Reaktor Nuklir Tri Dasa Mega, vol. 19, no. 3, Oct. 2017, pp. 131-8, doi:10.17146/tdm.2017.19.3.3668.