@misc{indiciaee98ff40bc8f2,
  title = {Constraints for toroidal cosmology.},
  author = {M McGuigan},
  year = {1990},
  doi = {10.1103/physrevd.41.3090},
  url = {https://pubmed.ncbi.nlm.nih.gov/10012238/},
  note = {Source identifier: 10012238}
}