@misc{indiciae03928479956f,
  title = {The structure and dynamics of bubble-type vortex breakdown},
  author = {Spall, R. E. and Ash, R. L. and Gatski, T. B.},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19900062033},
  note = {Source identifier: 19900062033}
}