@misc{indiciaeb56b299f5bd6,
  title = {Documentation of AIR2D, a computer program to simulate two-dimensional axisymmetric air flow in the unsaturated zone},
  author = {C.J. Joss and A. L. Baehr},
  year = {1997},
  doi = {10.3133/ofr97588},
  url = {https://pubs.usgs.gov/publication/ofr97588},
  note = {Source identifier: ofr97588}
}