@conference{8051,
  author = {H. Robinson and C. Johnson},
  title = {Measured GJ Factor Ratio of  4 HE+ (1 Doublet S 1/2) AND 4 HE (2 Triplet S 1)},
  year = {1984},
  publisher = {U. S. Department of Commerce},
  address = {National Bureau of Standards, Gaithersburg, Maryland},
  note = {JILA Pub. 2298},
}