Temperature Dependent Local Instability of the Hg1212 Structure by Polarized EXAFS N.L. Saini, M. Brunelli, A. Lanzara, M. Lusignoli, T. Rossetti, A. Bianconi, P. Bordet, F. Duc, J.L. Hazemann and J. Karpinski J. Phys. IV France, 7 C2 (1997) C2-1245-C2-1246 DOI: 10.1051/jp4:19972215