@misc{indiciaec9868a2efb2b,
  title = {Analysis of environmental variation in a Great Plains reservoir using principal components analysis and geographic information systems},
  author = {J.M. Long and W.L. Fisher},
  year = {2006},
  url = {https://pubs.usgs.gov/publication/70030954},
  note = {Source identifier: 70030954}
}