@article{MEKHFI:2010oQ,
  author = "MEKHFI, Mustapha",
  title = "{The Fermion Amplitude Probability as a Trace over Spinor Indices}",
  doi = "10.22323/1.084.0402",
  journal = "PoS",
  year = 2010,
  volume = "EPS-HEP 2009",
  pages = "402"
}