@misc{indiciae546843cc3094,
  title = {Indicators of severe undernutrition in urine of free-ranging elk during winter},
  author = {G. D. DelGiudice and U.S. Seal and L.D. Mech},
  year = {1991},
  url = {https://pubs.usgs.gov/publication/5222580},
  note = {Source identifier: 5222580}
}