@article{Santamaria_jfr15,
  author    = {Angel Santamaria{-}Navarro and Ernesto Homar Teniente Avil{\'{e}}s and Marti Morta and Juan Andrade{-}Cetto},
  title     = {Terrain Classification in Complex Three-dimensional Outdoor Environments},
  journal   = {J. Field Robotics},
  volume    = {32},
  number    = {1},
  pages     = {42--60},
  year      = {2015},
  doi       = {10.1002/rob.21521},
}