TY  - RPRT
TI  - Einstein Static Fields Admitting a Group G(2) of Continuous Transformations into Themselves.
AU  - L P Eisenhart
PY  - 1921
DO  - 10.1073/pnas.7.12.328
UR  - https://pubmed.ncbi.nlm.nih.gov/16586845/
ID  - 16586845
ER  -