@article{Walker-Loud:2020eP,
  author = "Walker-Loud, André",
  title = "{On the Cottingham formula and the electromagnetic contribution to the proton-neutron mass splitting}",
  doi = "10.22323/1.317.0045",
  journal = "PoS",
  year = 2020,
  volume = "CD2018",
  pages = "045"
}