@misc{indiciae90b149b20b36,
  title = {An analysis of howling response parameters useful for wolf pack censusing},
  author = {Fred H. Harrington and L. David Mech},
  year = {1982},
  doi = {10.2307/3808560},
  url = {https://pubs.usgs.gov/publication/5221783},
  note = {Source identifier: 5221783}
}