ULTRASONIC PROPERTIES OF A SUPERIONIC GLASS : B2O3, 0.5 Li2O, 0.7 LiCl D. Čiplys et J. Y. PrieurJ. Phys. Colloques, 42 C6 (1981) C6-184-C6-186DOI: https://doi.org/10.1051/jphyscol:1981654