@misc{indiciae01469b757c48,
  title = {Using simple environmental variables to estimate below-ground productivity in grasslands},
  author = {R.A. Gill and R.H. Kelly and W.J. Parton and K.A. Day and R.B. Jackson and J.A. Morgan and J.M.O. Scurlock and L.L. Tieszen and J.V. Castle and D.S. Ojima and X.S. Zhang},
  year = {2002},
  doi = {10.1046/j.1466-822x.2001.00267.x},
  url = {https://pubs.usgs.gov/publication/70024345},
  note = {Source identifier: 70024345}
}