TY  - RPRT
TI  - Perturbative method to solve fourth-order gravity field equations.
AU  - M Campanelli
AU  - CO Lousto
AU  - J Audretsch
PY  - 1994
DO  - 10.1103/physrevd.49.5188
UR  - https://pubmed.ncbi.nlm.nih.gov/10016834/
ID  - 10016834
ER  -