@misc{indiciaef9893406867b,
  title = {Workshop on Abundance Estimation},
  author = {O. Celenk and A. L. Clark and D. R. de Vletter and R. G. Garrett and Staaldvinen C. van},
  year = {1978},
  doi = {10.1007/bf02461978},
  url = {https://pubs.usgs.gov/publication/70010316},
  note = {Source identifier: 70010316}
}