Background model for the NaI(Tl) crystals in COSINE-100 P. Adhikari, G. Adhikari, E. Barbosa de Souza, N. Carlin, S. Choi, W. Q. Choi, M. Djamal, A. C. Ezeribe, C. Ha, I. S. Hahn et al. (39 more) Eur. Phys. J. C, 78 6 (2018) 490 Published online: 12 June 2018 DOI: 10.1140/epjc/s10052-018-5970-2