Magnetic properties of small Yttrium clusters - Eur. Phys. J. B 6, 459-466 (1998) R. Guirado-López, D. Spanjaard and M.-C. Desjonquères Eur. Phys. J. B, 7 2 (1999) 337 Published online: 15 January 1999 DOI: 10.1007/s100510050619