@misc{indiciaeb3eae1729f8d,
  title = {Quantized vortices around wavefront nodes, 2},
  author = {Hirschfelder, J. O. and Goebel, C. J. and Bruch, L. W.},
  year = {1974},
  url = {https://ntrs.nasa.gov/citations/19740022515},
  note = {Source identifier: 19740022515}
}