@article{BoenigerTronicke2012,
  author    = {Urs B{\"o}niger and Jens Tronicke},
  title     = {Subsurface utility extraction and characterization combining GPR symmetry and polarization attributes},
  journal   = {IEEE transactions on geoscience and remote sensing},
  volume    = {50},
  number    = {3},
  pages     = {736 -- 746},
  doi       = {10.1109/TGRS.2011.2163413},
  year      = {2012},
}