@misc{indiciae184e11f44587,
  title = {Climatically driven loss of calcium in steppe soil as a sink for atmospheric carbon},
  author = {A.G. Lapenis and G.B. Lawrence and S.W. Bailey and B.F. Aparin and A.I. Shiklomanov and N.A. Speranskaya and M.S. Torn and M. Calef},
  year = {2008},
  doi = {10.1029/2007gb003077},
  url = {https://pubs.usgs.gov/publication/70000489},
  note = {Source identifier: 70000489}
}