@misc{indiciae181ce6e1d5cd,
  title = {Variation in probability of first reproduction of Weddell seals},
  author = {G.L. Hadley and J.J. Rotella and R.A. Garrott and J.D. Nichols},
  year = {2006},
  url = {https://pubs.usgs.gov/publication/5224671},
  note = {Source identifier: 5224671}
}