@misc{indiciae5216270d4446,
  title = {The examination of a competition matrix for transitivity and intransitive loops},
  author = {James B. Grace and Glenn R. Guntenspergen and Janet R. Keough},
  year = {1993},
  doi = {10.2307/3545313},
  url = {https://pubs.usgs.gov/publication/70206415},
  note = {Source identifier: 70206415}
}