Characterization of reentrant cholesteric, cholesteric and chiral smectic phases of three recent polar mesogens N. Isaert, G. Joly, C. Destrade et Nguyen Huu Tinh Rev. Phys. Appl. (Paris), 23 3 (1988) 273-279 DOI: 10.1051/rphysap:01988002303027300