A THEORETICAL MODEL FOR THE CONTINUOUS ORDER-DISORDER TRANSITION AT 703 K IN SUPERIONIC α-AgI V. Mazzacurati, G. Ruocco, G. Signorelli, E. Cazzanelli, A. Fontana et G. Mariotto J. Phys. Colloques, 42 C6 (1981) C6-196-C6-198 DOI: 10.1051/jphyscol:1981658