TY  - RPRT
TI  - Time in semiclassical gravity.
AU  - R Brout
AU  - G Venturi
PY  - 1989
DO  - 10.1103/physrevd.39.2436
UR  - https://pubmed.ncbi.nlm.nih.gov/9959931/
ID  - 9959931
ER  -