@misc{indiciaefefeaf2773ce,
  title = {Discretized light-cone quantization: e+e-( gamma ) model for positronium.},
  author = {M Kaluza and HC Pauli},
  year = {1992},
  doi = {10.1103/physrevd.45.2968},
  url = {https://pubmed.ncbi.nlm.nih.gov/10014692/},
  note = {Source identifier: 10014692}
}