TY  - RPRT
TI  - Macroscopic dark periods without a metastable state.
AU  - GC Hegerfeldt
AU  - MB Plenio
PY  - 1992
DO  - 10.1103/physreva.46.373
UR  - https://pubmed.ncbi.nlm.nih.gov/9907873/
ID  - 9907873
ER  -