Crystal-field and superposition model analysis of R3+:BaY2F8 (R = Er, Dy, Nd) N. Magnani, G. Amoretti, A. Baraldi and R. Capelletti Eur. Phys. J. B, 29 1 (2002) 79-84 Published online: 17 September 2002 DOI: 10.1140/epjb/e2002-00264-0