@misc{indiciae779174aac229,
  title = {Wave direction measured by four different systems},
  author = {Mattie, M. G. and Hsiao, S. V. and Evans, D. D.},
  year = {1981},
  url = {https://ntrs.nasa.gov/citations/19810058218},
  note = {Source identifier: 19810058218}
}