@misc{indiciae18d52352af9e,
  title = {Topographic, bioclimatic, and vegetation characteristics of three ecoregion classification systems in North America: Comparisons along continent-wide transects},
  author = {R.S. Thompson and S.L. Shafer and K. H. Anderson and L.E. Strickland and R.T. Pelltier and P. J. Bartlein and M.W. Kerwin},
  year = {2005},
  doi = {10.1007/s00267-003-7200-3},
  url = {https://pubs.usgs.gov/publication/70029206},
  note = {Source identifier: 70029206}
}