@misc{indiciae40151f253cec,
  title = {New variables in gravity theories.},
  author = {RP Wallner},
  year = {1990},
  doi = {10.1103/physrevd.42.441},
  url = {https://pubmed.ncbi.nlm.nih.gov/10012860/},
  note = {Source identifier: 10012860}
}