SECOND ORDER PHASE TRANSITION IN THE FERRIMAGNETIC THIOSPINEL FeCr2S4 L. Brossard, J.L. Dormann, L. Goldstein, P. Gibart and P. Renaudin J. Phys. Colloques, 40 C2 (1979) C2-301 DOI: 10.1051/jphyscol:19792105