@article{PhysRevFocus.2.25,
  title = {The Difference between Protons and Neutrons},
  author = {Anonymous},
  journal = {Phys. Rev. Focus},
  volume = {2},
  issue = {},
  pages = {25},
  numpages = {1},
  year = {1998},
  month = {Nov},
  doi = {10.1103/PhysRevFocus.2.25},
  url = {http://link.aps.org/doi/10.1103/PhysRevFocus.2.25},
  publisher = {American Physical Society}
}