TY  - RPRT
TI  - Note on the semiclassical approximation in quantum gravity.
AU  - G Lifschytz
AU  - SD Mathur
AU  - M Ortiz
PY  - 1996
DO  - 10.1103/physrevd.53.766
UR  - https://pubmed.ncbi.nlm.nih.gov/10020058/
ID  - 10020058
ER  -