TY  - RPRT
TI  - Infrared activity in elemental crystals.
AU  - R Zallen
AU  - RM Martin
AU  - V Natoli
PY  - 1994
DO  - 10.1103/physrevb.49.7032
UR  - https://pubmed.ncbi.nlm.nih.gov/10009432/
ID  - 10009432
ER  -