Smectic a1 ↔ a2 transition of n_c-60.8 : a two-dimensional phase separation of the molecular endgroups H. Fadel, D. Guillon, A. Skoulios, F. Barbarin et M. DugayJ. Phys. France, 50 3 (1989) 375-385DOI: https://doi.org/10.1051/jphys:01989005003037500