@misc{indiciae32e548bbb60a,
  title = {Variation in \δ 13 C and \δ 15 N diet\–vibrissae trophic discrimination factors in a wild population of California sea otters},
  author = {Seth D. Newsome and Gena B. Bentall and M. Tim Tinker and Olav T. Oftedal and Katherine Ralls and James A. Estes and Marilyn L. Fogel},
  year = {2010},
  doi = {10.1890/09-1502.1},
  url = {https://pubs.usgs.gov/publication/70003962},
  note = {Source identifier: 70003962}
}