@misc{indiciae7f48741c15c6,
  title = {Reproduction of mallards following overwinter exposure to selenium},
  author = {G. H. Heinz and M. A. Fitzgerald},
  year = {1993},
  doi = {10.1016/0269-7491(93)90075-y},
  url = {https://pubs.usgs.gov/publication/5222776},
  note = {Source identifier: 5222776}
}