On c = 1 critical phases in anisotropic spin-1 chains C. Degli Esposti Boschi, E. Ercolessi, F. Ortolani and M. Roncaglia Eur. Phys. J. B, 35 4 (2003) 465-473 Published online: 24 October 2003 DOI: 10.1140/epjb/e2003-00299-7