High field magnetization of two types of shortly correlated systems : random anisotroy systems and nanoparticles B. Barabara, J. Filippi, A. Marchand, P. Mollard, V.S. Amaral, X. Devaux and A. Rousset J. Phys. I France, 2 1 (1992) 101-109 DOI: 10.1051/jp1:1992126