Invasion of alien plants in the Caatinga biome.

@article{Cavalcante2006InvasionOA,
  title={Invasion of alien plants in the Caatinga biome.},
  author={Arn{\'o}bio Cavalcante and Istvan Major},
  journal={Ambio},
  year={2006},
  volume={35 3},
  pages={141-3}
}