@misc{indiciaed46f8a355801,
  title = {Historical and projected carbon balance of mature black spruce ecosystems across north america: The role of carbon-nitrogen interactions},
  author = {Joy S. Clein and A. D. McGuire and X. Zhang and D. W. Kicklighter and J. M. Melillo and S.C. Wofsy and P.G. Jarvis and J.M. Massheder},
  year = {2002},
  doi = {10.1023/a:1019673420225},
  url = {https://pubs.usgs.gov/publication/70024757},
  note = {Source identifier: 70024757}
}