Neutron scattering study of the quasi-elastic spectral width in CeMg, CeMg 3 and NdMg3 intermetallic compounds R.M. Galera, A.P. Murani et J. PierreJ. Phys. France, 46 2 (1985) 303-307DOI: https://doi.org/10.1051/jphys:01985004602030300