@misc{indiciae2be0be6ff52a,
  title = {Pole structures in nuclear and particle physics.},
  author = {D Morgan and MR Pennington},
  year = {1987},
  doi = {10.1103/physrevlett.59.2818},
  url = {https://pubmed.ncbi.nlm.nih.gov/10035656/},
  note = {Source identifier: 10035656}
}