@misc{indiciaedb5cc3b9b25f,
  title = {Factorization of a two-loop four-point superstring amplitude.},
  author = {O Yasuda},
  year = {1988},
  doi = {10.1103/physrevlett.60.1688},
  url = {https://pubmed.ncbi.nlm.nih.gov/10038114/},
  note = {Source identifier: 10038114}
}