@conference{7625,
  author = {L. Hollberg and John Hall},
  title = {Observation of Energy Level Shifts of Rydberg Atoms due to Thermal Fields},
  year = {1983},
  publisher = {Springer-Verlag New York},
  address = {Interlaken, Switzerland},
  isbn = {ISBN-13: 9783540129578},
  note = {JILA Pub. 2729},
}