@TECHREPORT{hightower2001survey,
  author    = "Jeffrey Hightower and Gaetano Borriello",
  title     = "A Survey and Taxonomy of Location Sensing Systems for Ubiquitous Computing",
  institution = "University of Washington, Department of Computer Science and Engineering",
  type      = {UW CSE},
  number    = "01-08-03",
  month     = "August",
  address   = "Seattle, WA",
  year      = {2001}
}