Mechanism of ground-state selection in the frustrated molecular spin cluster G. Chaboussant, S. T. Ochsenbein, A. Sieber, H.-U. Güdel, H. Mutka, A. Müller and B. Barbara Europhys. Lett., 66 3 (2004) 423-429 Published online: 01 April 2004 DOI: 10.1209/epl/i2004-10008-x