Dynamic evidence for a 2d - 3d crossover in the Ising spin glass Fe0.35Mg0.65Br2 J. Vetel, D. Bertrand, A.R. Fert, J.P. Redoules et J. Ferre J. Phys. France, 50 24 (1989) 3441-3445 DOI: 10.1051/jphys:0198900500240344100