@misc{indiciae9633f15f128b,
  title = {Housing growth in and near United States protected areas limits their conservation value},
  author = {V. C. Radeloff and S. I. Stewart and T. J. Hawbaker and U. Gimmi and A.M. Pidgeon and C.H. Flather and R. B. Hammer and D.P. Helmers},
  year = {2009},
  doi = {10.1073/pnas.0911131107},
  url = {https://pubs.usgs.gov/publication/70033831},
  note = {Source identifier: 70033831}
}