Zero temperature phase transitions in spin-ladders: Phase diagram and dynamical studies of Cu2(C5H12N2)2Cl4G. Chaboussant, M.-H. Julien, Y. Fagot-Revurat, M. Hanson, L. P. Lévy, C. Berthier, M. Horvatić and O. PiovesanaEur. Phys. J. B, 6 2 (1998) 167-181DOI: https://doi.org/10.1007/s100510050539