@misc{indiciaeb62a7f163c03,
  title = {Discrete orthogonal function expansions for non-uniform grids using the fast Fourier transform},
  author = {Cain, A. B. and Ferziger, J. H. and Reynolds, W. C.},
  year = {1984},
  url = {https://ntrs.nasa.gov/citations/19850033558},
  note = {Source identifier: 19850033558}
}