TY  - RPRT
TI  - Three-dimensional gravity and string ghosts.
AU  - S Carlip
AU  - II Kogan
PY  - 1991
DO  - 10.1103/physrevlett.67.3647
UR  - https://pubmed.ncbi.nlm.nih.gov/10044789/
ID  - 10044789
ER  -