@misc{142166,
  author = {Peter Mohr},
  title = {CODATA Recommended Values of the Fundamental Physical Constants, Web Version 4.0, This database was developed by J. Baker, M. Douma, and S. Kotochigova},
  year = {2003},
  number = {77},
  month = {2003-01-01},
  publisher = {http://physics.nist.gov/constants},
  language = {en},
}