Devlin-like approach to a spin-1 transverse XY model with biquadratic exchange and single-ion anisotropy Ileana Rabuffo, Luigi De Cesare, Alvaro Caramico D’Auria and Maria T. Mercaldo Eur. Phys. J. B, 92 7 (2019) 154 Published online: 10 July 2019 DOI: 10.1140/epjb/e2019-100155-5