(+) 10E4M6 : a critical A-C* and the first C*-hexatic B liquid crystal phase transitions P. Keller, P.E. Cladis, P.L. Finn et H.R. Brand J. Phys. France, 46 12 (1985) 2203-2209 DOI: 10.1051/jphys:0198500460120220300