@misc{indiciae62b3e56d2f5b,
  title = {Vortex wake research},
  author = {Zalovcik, J. A. and Dunham, R. E., Jr.},
  year = {1973},
  url = {https://ntrs.nasa.gov/citations/19740009620},
  note = {Source identifier: 19740009620}
}