Phase transitions in mixed disordered crystals Rb1−xKxCaF3 (0 < x < 1) investigated by Raman spectroscopyPh. Daniel, J. Toulouse and M. RousseauEur. Phys. J. AP, 5 1 (1999) 33-44DOI: https://doi.org/10.1051/epjap:1999109