@misc{indiciae3965eed358f1,
  title = {Productivity of saker falcons (Falco cherrug) in Mongolia},
  author = {D. H. Ellis and Merlin H. Ellis and Pu Tsengeg},
  year = {1995},
  url = {https://pubs.usgs.gov/publication/5210780},
  note = {Source identifier: 5210780}
}