@misc{249896,
  author = {Stephan Schlamminger},
  title = {Why is it so difficult to measure the gravitational constant?},
  year = {2016},
  month = {2016-06-01},
  publisher = {IUPAP Newsletter},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=921014},
  language = {en},
}