@misc{indiciae959bb6f041ca,
  title = {Elk, beaver, and the persistence of willows in national parks: Response to Keigley (1999)},
  author = {F. J. Singer and L. C. Zeigenfuss and R.G. Cates and D.T. Barnett},
  year = {2000},
  url = {https://pubs.usgs.gov/publication/1015074},
  note = {Source identifier: 1015074}
}