TY  - RPRT
TI  - Canonical quantization of (2+1)-dimensional gravity.
AU  - H Waelbroeck
PY  - 1994
DO  - 10.1103/physrevd.50.4982
UR  - https://pubmed.ncbi.nlm.nih.gov/10018150/
ID  - 10018150
ER  -