@misc{indiciaeda203cf33d39,
  title = {Ground vortex flow field investigation},
  author = {Kuhn, Richard E. and Delfrate, John H. and Eshleman, James E.},
  year = {1988},
  url = {https://ntrs.nasa.gov/citations/19890001481},
  note = {Source identifier: 19890001481}
}