@misc{indiciae4a9dce1ae73c,
  title = {Declines of greater and lesser scaup populations: issues, hypotheses, and research needs},
  author = {J. E. Austin and A. D. Afton and M.G. Anderson and R. G. Clark and Christine M. Custer and J. Lawrence and J.B. Pollard and J.K. Ringelman},
  year = {2000},
  url = {https://pubs.usgs.gov/publication/1001092},
  note = {Source identifier: 1001092}
}