@misc{indiciaeb4b696ef8d5f,
  title = {Multiphoton exchange amplitudes observed by neutron interferometry.},
  author = {J Summhammer and KA Hamacher and H Kaiser and H Weinfurter and DL Jacobson and SA Werner},
  year = {1995},
  doi = {10.1103/physrevlett.75.3206},
  url = {https://pubmed.ncbi.nlm.nih.gov/10059526/},
  note = {Source identifier: 10059526}
}