@article{867,
  author = {Judah Levine},
  title = {Time and frequency distribution using satellites},
  year = {2002},
  journal = {Reports on Progress in Physics},
  volume = {65},
  pages = {1119-1164},
  month = {Jan-08-2002},
  issn = {0034-4885},
  doi = {10.1088/0034-4885/65/8/201},
}