@misc{indiciae73d766bc0689,
  title = {Density estimates of monarch butterflies overwintering in central Mexico},
  author = {Wayne E. Thogmartin and James E. Diffendorfer and Laura Lopez-Hoffman and Karen Oberhauser and John M. Pleasants and Brice X. Semmens and Darius J. Semmens and Orley R. Taylor and Ruscena Wiederholt},
  year = {2017},
  doi = {10.7717/peerj.3221},
  url = {https://pubs.usgs.gov/publication/70187208},
  note = {Source identifier: 70187208}
}