GIANT SPIN FLUCTUATIONS IN YMn2 AND RELATED COMPOUNDS M. Shiga, H. Wada, Y. Nakamura, J. Deportes et K. R. A. Ziebeck J. Phys. Colloques, 49 C8 (1988) C8-241-C8-246 DOI: 10.1051/jphyscol:19888107