@misc{indiciae793dd9175c5d,
  title = {Electromagnetic proton–neutron mass difference},
  author = {Tomalak, Oleksandr},
  year = {2020},
  doi = {10.1140/epjp/s13360-020-00413-9},
  url = {https://www.osti.gov/biblio/1546035},
  note = {Source identifier: 1546035}
}