@misc{indiciaec09fd9f26101,
  title = {Non-native plant invasions in managed and protected ponderosa pine/Douglas-fir forests of the Colorado Front Range},
  author = {Paula J. Fornwalt and M. R. Kaufmann and L. S. Huckaby and J. M. Stoker and Thomas J. Stohlgren},
  year = {2003},
  doi = {10.1016/s0378-1127(02)00456-5},
  url = {https://pubs.usgs.gov/publication/1015033},
  note = {Source identifier: 1015033}
}