NEUTRON QUASI-ELASTIC SCATTERING STUDY OF ROTATIONAL MOTIONS IN THE SMECTIC C, H AND VI PHASES OF TEREPHTAL-BIS-BUTYL-ANILINE (TBBA) F. VOLINO, A. J. DIANOUX et H. HERVETJ. Phys. Colloques, 37 C3 (1976) C3-55-C3-64DOI: https://doi.org/10.1051/jphyscol:1976308