@misc{indiciae20a06398f019,
  title = {Recent changes toward earlier springs---early signs of climate warming in western North America},
  author = {D. Cayan and M. Dettinger and I. Stewart and N. Knowles},
  year = {2005},
  url = {https://pubs.usgs.gov/publication/70174915},
  note = {Source identifier: 70174915}
}