@misc{indiciae960537dd2f5f,
  title = {Vortex age as a wake turbulence scaling parameter},
  author = {Marshall, J. R. and Marchman, J. F., III},
  year = {1973},
  url = {https://ntrs.nasa.gov/citations/19730022513},
  note = {Source identifier: 19730022513}
}