@misc{indiciae48fb362fa33b,
  title = {Land-cover observations as part of a Global Earth Observation System of Systems (GEOSS): Progress, activities, and prospects},
  author = {M. Herold and C. E. Woodcock and Thomas R. Loveland and J. Townshend and M. Brady and C. Steenmans and C. C. Schmullius},
  year = {2008},
  doi = {10.1109/jsyst.2008.925983},
  url = {https://pubs.usgs.gov/publication/70156526},
  note = {Source identifier: 70156526}
}