CEF nature of the magnetic excitations in ordered HoNi2B2C N. Cavadini, Th. Strässle, P. Allenspach, P. C. Canfield and Ph. Bourges Eur. Phys. J. B, 29 3 (2002) 377-384 Published online: 14 October 2002 DOI: 10.1140/epjb/e2002-00321-8