@inproceedings{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",
  booktitle = "Proceedings of The 9th International workshop on Chiral Dynamics {\textemdash} PoS(CD2018)",
  year = 2020,
  volume = "317",
  pages = "045"
}