@conference{123291,
  author = {D Allan and W Lewandowski and C Thomas},
  title = {CGSIC Subcommittee on Time and CCDS Group of Experts on GPS Standardization},
  year = {1991},
  month = {1991-01-01},
  publisher = {ION Global Position System Conf  , Albuquerque, NM},
  language = {en},
}