TY  - RPRT
TI  - Low-frequency floppy modes in beta -cristobalite.
AU  - IP Swainson
AU  - MT Dove
PY  - 1993
DO  - 10.1103/physrevlett.71.193
UR  - https://pubmed.ncbi.nlm.nih.gov/10054406/
ID  - 10054406
ER  -