@misc{indiciae41a9789d704d,
  title = {Seasonal metabolic and reproductive cycles in wolves},
  author = {U.S. Seal and E.D. Plotka and L.D. Mech and J.M. Packard},
  year = {1987},
  url = {https://pubs.usgs.gov/publication/5210229},
  note = {Source identifier: 5210229}
}