INVESTIGATION OF THE CRITICAL SCATTERING AT THE STRUCTURAL PHASE TRANSITION IN RbCaF3 USING MÖSSBAUER DIFFRACTION J. Maetz, N.M. Butt, H. Jex and M. Müllner J. Phys. Colloques, 40 C2 (1979) C2-337-C2-338 DOI: 10.1051/jphyscol:19792119