Study of ferrocholesteric discotic and calamitic lyotropics by optical microscopy and X-ray diffraction A.M. Figueiredo Neto, L. Liebert et A.M. LevelutJ. Phys. France, 45 9 (1984) 1505-1512DOI: https://doi.org/10.1051/jphys:019840045090150500