@misc{152231,
  author = {Peter Mohr and Barry Taylor},
  title = {CODATA Recommended values of the Fundamental Physical Constants: 1998},
  year = {1999},
  number = {28},
  month = {1999-01-01},
  publisher = {J. Phys. & Chem. Ref. Data (JPCRD), National Institute of Standards and Technology, Gaithersburg, MD},
  language = {en},
}