@misc{indiciae83177be4e9bb,
  title = {Higher-order Stationary Phase Approximations in Semiclassical Scattering},
  author = {Mason, E. A. and Smith, F. J. and Vanderslice, J. T.},
  year = {1964},
  url = {https://ntrs.nasa.gov/citations/19660024094},
  note = {Source identifier: 19660024094}
}