@misc{indiciaeebe3e109d4b7,
  title = {S -Matrix for massless particles},
  author = {Hannesdottir, Holmfridur (ORCID:0000000254402086) and Schwartz, Matthew D.},
  year = {2020},
  doi = {10.1103/physrevd.101.105001},
  url = {https://www.osti.gov/biblio/1616788},
  note = {Source identifier: 1616788}
}