Low-energy spin excitations in the molecular magnetic cluster G. Chaboussant, R. Basler, A. Sieber, S. T. Ochsenbein, A. Desmedt, R. E. Lechner, M. T. F. Telling, P. Kögerler, A. Müller and H.-U. Güdel Europhys. Lett., 59 2 (2002) 291-297 Published online: 01 July 2002 DOI: 10.1209/epl/i2002-00240-x