@article{70831,
  author = {Jay Hendricks and Douglas Olson},
  title = {Towards portable vacuum standards},
  year = {2009},
  number = {22},
  month = {2009-08-01},
  publisher = {Physics World},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=902691},
  language = {en},
}