@misc{indiciaeed59b4a29f4d,
  title = {Crassulacean acid metabolism in the seasonally submerged aquatic Isoetes howellii},
  author = {Jon E. Keeley},
  year = {1983},
  doi = {10.1007/bf00384542},
  url = {https://pubs.usgs.gov/publication/1007646},
  note = {Source identifier: 1007646}
}