TEMPERATURE DEPENDENT DISORDERING IN RANDOM ANTIFERROMAGNETIC Rb2Mn0.70 Cr0.30 Cl4 H. Tietze, D. Sieger, P. Schweiss, R. Geick et W. Treutmann J. Phys. Colloques, 49 C8 (1988) C8-1253-C8-1254 DOI: 10.1051/jphyscol:19888569