TY  - RPRT
TI  - Black hole entropy: Off shell versus on shell.
AU  - VP Frolov
AU  - DV Fursaev
AU  - AI Zelnikov
PY  - 1996
DO  - 10.1103/physrevd.54.2711
UR  - https://pubmed.ncbi.nlm.nih.gov/10020948/
ID  - 10020948
ER  -