@conference{89051,
  author = {Marc Weiss},
  title = {GPS Changes Before and After Implementation of the Architecture Evolution Plan},
  year = {2008},
  month = {2008-12-01},
  publisher = {Proc. 2008 PTTI Conf., Reston, VA},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=901089},
  language = {en},
}