Pseudo-lamellar ordering in uniaxial and biaxial lyotropic nematics : a synchrotron X-ray diffraction experiment A.M. Figueiredo Neto, Y. Galerne, A.M. Levelut et L. Liebert J. Physique Lett., 46 11 (1985) 499-505 DOI: 10.1051/jphyslet:019850046011049900