@misc{indiciaef2f6542ab5f0,
  title = {Nonlinear acoustic behavior at a caustic - An approximate analytical solution},
  author = {Gill, P. M. and Seebass, A. R.},
  year = {1975},
  url = {https://ntrs.nasa.gov/citations/19750044555},
  note = {Source identifier: 19750044555}
}