TY  - RPRT
TI  - Thermal effect in opal below room temperature.
AU  - M J Buerger
AU  - G L Shoemaker
PY  - 1972
DO  - 10.1073/pnas.69.11.3225
UR  - https://pubmed.ncbi.nlm.nih.gov/16592025/
ID  - 16592025
ER  -