Magnetic-field-induced quantum criticality in a spin-S planar ferromagnet with single-ion anisotropy M.T. Mercaldo, I. Rabuffo, L. De Cesare and A. Caramico D’Auria Eur. Phys. J. B, 86 8 (2013) 340 Published online: 01 August 2013 DOI: 10.1140/epjb/e2013-40407-6