CRITICAL BEHAVIOUR OF THE UNIAXIAL DIPOLAR FERROMAGNET LiHoF4 P. Beauvillain, J.P. Renard, I. Laursen et P.J. Walker J. Phys. Colloques, 39 C6 (1978) C6-745-C6-746 DOI: 10.1051/jphyscol:19786332