Phase transitions between single- and double-layered smectic structures in binary mixtures of cyano-mesogens F. Barbarin, M. Dugay, A. Piovesan, D. Guillon et A. Skoulios J. Phys. France, 49 9 (1988) 1583-1591 DOI: 10.1051/jphys:019880049090158300