@article{van2018reducing,
  title = {Reducing external costs of nitrogen pollution by relocation of pig production between regions in the European Union}
  author = {van Grinsven, Hans J. M. and van Dam, Jan D. and Lesschen, Jan Peter and Timmers, Marloes H. G. and Velthof, Gerard L. and Lassaletta, Luis},
  journal = {Regional Environmental Change},
  url = {https://doi.org/10.1007/s10113-018-1335-5},
  year = {2018}
}