Elastic anomalies and orientational glass transition in Na(CN)xCl1-x mixed crystals. A Brillouin spectroscopic studyR. J. Jiménez Riobóo, K.-P. Bohn and J. K. KrügerEur. Phys. J. B, 13 4 (2000) 643-651DOI: https://doi.org/10.1007/s100510050081