@inbook{8068,
  author = {Judah Levine},
  title = {Multiple Wavelength Electromagnetic Distance Measurement},
  year = {1984},
  pages = {45-51},
  publisher = {Springer Berlin Heidelberg},
  address = {Berlin, Heidelberg},
  isbn = {978-3-540-13830-3},
  doi = {10.1007/978-3-642-45583-4_4},
}