@conference{1251,
  author = {Christine Hackman and Judah Levine and T. Parker and D. Piester and J. Becker},
  title = {A new technique for estimating frequency from GPS carrier-phase time transfer data},
  year = {2004},
  month = {2004-08},
  publisher = {IEEE},
  address = {Montreal, Canada},
  url = {http://tf.boulder.nist.gov/general/pdf/1966.pdf},
  doi = {10.1109/FREQ.2004.1418477},
}