@conference{6878,
  author = {Sam Richman and J. Giaime and R. Stebbins and Peter Bender and James Faller},
  title = {Progress on low-frequency active vibration isolation},
  year = {1999},
  publisher = {World Scientific Publishing},
  isbn = {ISBN-10: 9810239548 ISBN-13: 978-9810239541},
  note = {JILA Pub. 6047},
}