Neutron scattering study of the proton dynamics in NH+4 and OH+3 β alumina J.C. Lassègues, M. Fouassier, N. Baffier, Ph. Colomban et A.J. DianouxJ. Phys. France, 41 3 (1980) 273-280DOI: https://doi.org/10.1051/jphys:01980004103027300