@inbook{9176,
  author = {O. Poulsen and N. Bjerre and E. Riis and S. Lee and John Hall},
  title = {Fundamental tests of the isotropy of space using fast-beam laser spectroscopy},
  year = {1989},
  pages = {589\textendash612},
  publisher = {World Scientific Pub Co Inc},
  issn = {ISBN-10: 9971506386 ISBN-13: 978-9971506384},
  note = {JILA Pub. 4000},
}