Purification of cerium, neodymium and gadolinium for low background experiments R.S. Boiko, A.S. Barabash, P. Belli, R. Bernabei, F. Cappella, R. Cerulli, F.A. Danevich, A. Incicchitti, M. Laubenstein, V.M. Mokina et al. (4 more) EPJ Web of Conferences, 65 (2014) 04001 Published online: 10 January 2014 DOI: 10.1051/epjconf/20136504001