@misc{indiciae9b5892186535,
  title = {Source theory viewpoints in deep inelastic scattering.},
  author = {J Schwinger},
  year = {1975},
  doi = {10.1073/pnas.72.1.1},
  url = {https://pubmed.ncbi.nlm.nih.gov/16592208/},
  note = {Source identifier: 16592208}
}