@misc{indiciaeec30911a79f1,
  title = {Stratospheric Tides and Data Assimilation},
  author = {Swinbank, R. and Orris, R. L. and Wu, D. L.},
  year = {1999},
  url = {https://ntrs.nasa.gov/citations/19990077343},
  note = {Source identifier: 19990077343}
}