@misc{indiciae48747e0e200b,
  title = {Path-integral formulation of closed strings.},
  author = {S Chaudhuri and H Kawai and S Tye},
  year = {1987},
  doi = {10.1103/physrevd.36.1148},
  url = {https://pubmed.ncbi.nlm.nih.gov/9958280/},
  note = {Source identifier: 9958280}
}