@misc{indiciaee4e37aa7cd65,
  title = {Long-term forest productivity},
  author = {Bernard T. Bormann and Steven S. Perakis and Robyn Darbyshire and Jeff Hatten},
  year = {2017},
  url = {https://pubs.usgs.gov/publication/70187871},
  note = {Source identifier: 70187871}
}