@misc{indiciaeca5d68000ac5,
  title = {Loop amplitudes in covariant string field theory.},
  author = {H Hata and K Itoh and T Kugo and H Kunitomo and K Ogawa},
  year = {1987},
  doi = {10.1103/physrevd.35.1356},
  url = {https://pubmed.ncbi.nlm.nih.gov/9957793/},
  note = {Source identifier: 9957793}
}