@misc{indiciae54b23c097242,
  title = {BRST-invariant transitions between closed and open strings.},
  author = {JA Shapiro and CB Thorn},
  year = {1987},
  doi = {10.1103/physrevd.36.432},
  url = {https://pubmed.ncbi.nlm.nih.gov/9958189/},
  note = {Source identifier: 9958189}
}