@misc{indiciae4cf8d9af63df,
  title = {Large-scale causes of variation in the serpentine vegetation of California},
  author = {J.B. Grace and H.D. Safford and S. Harrison},
  year = {2007},
  doi = {10.1007/s11104-007-9196-6},
  url = {https://pubs.usgs.gov/publication/70029932},
  note = {Source identifier: 70029932}
}