@misc{indiciaea54ba4650b4a,
  title = {Operator approach to bosonic string: Multiloop calculation and b-ghost insertion.},
  author = {U Carow-Watamura and ZF Ezawa and A Tezuka and S Watamura},
  year = {1989},
  doi = {10.1103/physrevd.40.422},
  url = {https://pubmed.ncbi.nlm.nih.gov/10011831/},
  note = {Source identifier: 10011831}
}