@misc{indiciae969d790d7f5e,
  title = {Factorization and zero-slope limit of strings.},
  author = {H Itoyama},
  year = {1987},
  doi = {10.1103/physrevd.36.480},
  url = {https://pubmed.ncbi.nlm.nih.gov/9958192/},
  note = {Source identifier: 9958192}
}