@article{4389,
  author = {C. Speake and D. Newell},
  title = {The design and application of a novel high-frequency tiltmeter},
  year = {1990},
  journal = {Review of Scientific Instruments},
  volume = {61},
  pages = {1500},
  month = {Jan-01-1990},
  issn = {00346748},
  url = {http://link.aip.org/link/RSINAK/v61/i5/p1500/s1\&Agg=doi},
  doi = {10.1063/1.1141160},
}